Selective measurements for layer 1 (L1) and layer (L2) mobility

Abstract

Systems and techniques for performing wireless communications are disclosed. For example, a method for wireless communication at a network entity (e.g., a base station or a portion thereof) may include determining a cell in a trigger assessment, determining a cell metric type, and determining a trigger condition. Based on the trigger condition, the user equipment may skip Layer 1 (L1) measurements for one or more cells (e.g., which satisfy the trigger condition), or reduce an L1 measurement frequency for the one or more cells.

Description

Technical Field

[0001] Aspects of the present disclosure generally relate to wireless communications.According to some aspects, systems and techniques are described for selective measurement procedures for Layer 1 (L1) and / or Layer 2 (L2) mobility, such as to reduce power consumption in user equipment. Background Art

[0002] Wireless communication systems are deployed to provide a variety of telecommunication services, including telephony, video, data, messaging, broadcasts, and the like. Wireless communication systems have evolved over several generations, including first-generation analog wireless telephone service (1G), second-generation (2G) digital wireless telephone service (including transitional 2.5G networks), third-generation (3G) high-speed data wireless service with Internet capabilities, fourth-generation (4G) services (e.g., Long Term Evolution (LTE), WiMax), and fifth-generation (5G) services (e.g., New Radio (NR)). Currently, there are many different types of wireless communication systems in use, including cellular systems and personal communications service (PCS) systems. Examples of known cellular systems include the cellular analog Advanced Mobile Phone System (AMPS), and digital cellular systems based on code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), Global System for Mobile Communications (GSM), and the like. Summary of the Invention

[0003] The following presents a simplified summary of one or more aspects disclosed herein. Therefore, the following summary should neither be considered an exhaustive overview of all contemplated aspects nor be considered to identify key or critical elements related to all contemplated aspects or to delineate the scope associated with any particular aspect. Therefore, the sole purpose of the following summary is to present certain concepts related to one or more aspects of the mechanisms disclosed herein in a simplified form prior to the detailed description presented below.

[0004] Systems, methods, apparatuses, and computer-readable media for performing wireless communications are disclosed. According to at least one other example, a method for wireless communications performed at a user equipment (UE) is provided.

[0005] In some aspects, the technology described herein relates to a method of wireless communication performed by a user equipment (UE), the method comprising: determining whether a relaxed measurement criterion for low mobility is satisfied based on at least one reference measurement of a cell and at least one current measurement of the cell; and performing a selective Layer 1 (L1) measurement for the cell based on satisfying the relaxed measurement criterion for low mobility, the L1 measurement associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0006] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor, coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for low mobility are satisfied based on at least one reference measurement of a cell and at least one current measurement of the cell; and based on satisfying the relaxed measurement criteria for low mobility, perform a selective Layer 1 (L1) measurement for the cell, the L1 measurement associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell.

[0007] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine whether relaxed measurement criteria for low mobility are met based on at least one reference measurement of a cell and at least one current measurement of the cell; and perform selective Layer 1 (L1) measurements for the cell based on meeting the relaxed measurement criteria for low mobility, the L1 measurements being associated with transitioning the device from communicating with the cell to communicating with a candidate cell.

[0008] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: means for determining whether relaxed measurement criteria for low mobility are satisfied based on at least one reference measurement of a cell and at least one current measurement of the cell; and means for performing selective Layer 1 (L1) measurements for the cell based on satisfying the relaxed measurement criteria for low mobility, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0009] In some aspects, the technology described herein relates to a method of wireless communication performed by a user equipment (UE), the method comprising: determining whether a relaxed measurement criterion for a good cell quality condition is satisfied based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and performing a selective Layer 1 (L1) measurement for the cell based on satisfying the relaxed measurement criterion for the good cell quality condition, the L1 measurement associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0010] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for a good cell quality condition are satisfied based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and based on satisfying the relaxed measurement criteria for the good cell quality condition, perform a selective Layer 1 (L1) measurement for the cell, the L1 measurement associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell.

[0011] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine whether relaxed measurement criteria for a good cell quality condition are met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and perform selective Layer 1 (L1) measurements for the cell based on meeting the relaxed measurement criteria for the good cell quality condition, the L1 measurements being associated with transitioning the device from communicating with the cell to communicating with a candidate cell.

[0012] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: means for determining whether relaxed measurement criteria for a good cell quality condition are satisfied based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and means for performing selective Layer 1 (L1) measurements for the cell based on satisfying the relaxed measurement criteria for the good cell quality condition, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0013] In some aspects, the technology described herein relates to a method of wireless communication performed by a user equipment (UE), the method comprising: determining whether a relaxed measurement criterion for a poor candidate cell condition is satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and performing selective Layer 1 (L1) measurement of at least one of the serving cell or the candidate cell based on satisfying the relaxed measurement criterion for the poor candidate cell condition, the L1 measurement associated with transitioning the UE from communicating with the serving cell to communicating with at least one candidate cell.

[0014] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor, coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for a poor candidate cell condition are satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and based on satisfying the relaxed measurement criteria for the poor candidate cell condition, perform selective Layer 1 (L1) measurements for at least one of the serving cell or the candidate cell, the L1 measurements associated with transitioning the apparatus from communicating with the serving cell to communicating with at least one candidate cell.

[0015] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine whether relaxed measurement criteria for a poor candidate cell condition are satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and perform selective Layer 1 (L1) measurements of at least one of the serving cell or the candidate cell based on satisfying the relaxed measurement criteria for the poor candidate cell condition, the L1 measurements being associated with transitioning the device from communicating with the serving cell to communicating with at least one candidate cell.

[0016] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: means for determining whether relaxed measurement criteria for a poor candidate cell condition are satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and means for performing selective Layer 1 (L1) measurements of at least one of the serving cell or the candidate cell based on satisfying the relaxed measurement criteria for the poor candidate cell condition, the L1 measurements associated with transitioning the UE from communicating with the serving cell to communicating with at least one candidate cell.

[0017] In some aspects, the technology described herein relates to a method of providing wireless communications performed by a user equipment (UE), the method comprising: determining one or more cells in a trigger evaluation; determining a cell metric type associated with the trigger evaluation; determining whether a trigger condition exists based on the cell metric type; and performing selective layer 1 (L1) measurements based on determining the existence of the trigger condition.

[0018] In some aspects, the technology described herein relates to an apparatus for performing wireless communications, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine one or more cells in a trigger evaluation; determine a cell metric type associated with the trigger evaluation; determine whether a trigger condition exists based on the cell metric type; and perform selective layer 1 (L1) measurements based on determining the existence of the trigger condition.

[0019] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine one or more cells in a trigger evaluation; determine a cell metric type associated with the trigger evaluation; determine whether a trigger condition exists based on the cell metric type; and perform selective layer 1 (L1) measurements based on determining the existence of the trigger condition.

[0020] In some aspects, the technology described herein relates to an apparatus for wireless communication, comprising: a component for determining one or more cells in a trigger evaluation; a component for determining a cell metric type associated with the trigger evaluation; a component for determining whether a trigger condition exists based on the cell metric type; and a component for performing selective layer 1 (L1) measurements based on determining that the trigger condition exists.

[0021] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to and as illustrated by the accompanying figures and description.

[0022] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0023] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporated into the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and compositions.

[0024] Other objects and advantages associated with the aspects disclosed herein will be apparent to those skilled in the art based on the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are presented to aid in describing various aspects of the present disclosure and are provided solely for illustration and not limitation of the aspects.

[0026] Figure 1 is a block diagram illustrating an example of a wireless communication network according to some examples;

[0027] Figure 2 is a diagram illustrating a design of a base station and a user equipment (UE) device according to some examples, which enables transmission and processing of signals exchanged between the UE and the base station;

[0028] Figure 3 is a diagram illustrating an example of a decomposed base station according to some examples;

[0029] Figure 4 is a block diagram illustrating components of user equipment according to some examples;

[0030] Figure 5 Illustrated are examples of a single primary serving cell (PCell) change without carrier aggregation and an example of a single special cell (SpCell) change without carrier aggregation according to some examples;

[0031] Figure 6Examples of PCell change and secondary serving cell (SCell) change with carrier aggregation according to some examples are illustrated;

[0032] Figure 7 Examples of cell group based selection according to some examples are illustrated;

[0033] Figure 8 illustrates examples of pre-configured candidate cells for L1 / L2 based special cell (SpCell) change according to some examples;

[0034] Figure 9 Another example of pre-configured candidate cells for L1 / L2 based SpCell selection according to some examples is illustrated;

[0035] Figure 10 Examples of SpCell selection according to some examples are illustrated;

[0036] Figure 11 Another example of SpCell selection according to some examples is illustrated;

[0037] Figure 12 Another example of SpCell selection according to some examples is illustrated;

[0038] Figure 13A A flow chart illustrating an example process for selective measurement for layer 1 and layer 2 mobility according to some examples;

[0039] Figure 13B A flow chart illustrating an example process for selective measurement for layer 1 and layer 2 mobility according to some examples;

[0040] Figure 13C A flow chart illustrating an example process for selective measurement for layer 1 and layer 2 mobility according to some examples;

[0041] Figure 14 illustrates a flow chart of an example process for selective measurement for layer 1 and layer 2 mobility according to some examples; and

[0042] Figure 15 is a block diagram illustrating an example of a computing system according to some examples. DETAILED DESCRIPTION

[0043] For illustrative purposes, certain aspects of the present disclosure are provided below. Without departing from the scope of the present disclosure, alternative aspects may be designed. Additionally, well-known elements of the present disclosure will not be described in detail or will be omitted to avoid making the relevant details of the present disclosure difficult to understand. Some aspects described herein may be applied independently, and some of them may be applied in combination, which will be apparent to those skilled in the art. In the following description, specific details are set forth for explanation purposes to provide a thorough understanding of various aspects of the application. However, it will be apparent that various aspects may be implemented without these specific details. Each drawing and description is not intended to be restrictive.

[0044] The following description provides only exemplary aspects and is not intended to limit the scope, applicability, or configuration of the present disclosure. Instead, the following description of the exemplary aspects will provide those skilled in the art with a description that can be used to implement the exemplary aspects. It should be understood that various changes may be made to the function and arrangement of the elements without departing from the scope of the present application as set forth in the appended claims.

[0045] Wireless communication networks are deployed to provide various communication services, such as voice, video, packet data, messaging, broadcast, any combination thereof, or other communication services. Wireless communication networks may support both access links and side links for communication between wireless devices. An access link may refer to any communication link between a client device (e.g., user equipment (UE), station (STA), or other client device) and a base station (e.g., a 3GPP gNB for 5G / NR, a 3GPP eNB for 4G / LTE, a Wi-Fi access point (AP), or other base station). For example, an access link may support uplink signaling, downlink signaling, connection procedures, etc. An example of an access link is the Uu link or interface (also known as NR-Uu) between a 3GPP gNB and a UE.

[0046] The UE may transition from a serving cell to one or more candidate cells based on a triggering event. As described below, there are a number of different conditions that may cause the UE to transition from communicating with the serving cell to communicating with the candidate cell. The mobility of the UE is one of the factors that may cause the UE to transition from a serving cell, for example, due to the UE moving from the serving cell to a candidate cell that can provide wireless services. In some cases, the UE may use one or more layer 1 (L1) measurements (e.g., as a trigger) to evaluate whether to transition from the serving cell and which cell should become the new serving cell. In 5G 3GPP Release 18, the serving cell or primary serving cell may be updated to the UE via layer 1 / layer 2 signaling based on the L1 measurement. However, the L1 measurement only applies to the primary serving cell of the UE. In addition, in one aspect, there is only one metric that can be applied to the L1 measurement, which is only the layer 3 reference signal received power (RSRP). Therefore, the triggering conditions are very limited in terms of using L1 measurements in handover scenarios.

[0047] As described in more detail below, apparatuses, electronic devices, methods (also referred to as processes), and computer-readable media (collectively, "systems and techniques") are described herein for signaling of cell changes and / or beam changes, such as Layer 1 (L1) and / or Layer 2 (L2) signaling of cell changes and / or beam changes. Alternatively or additionally, in some aspects, these systems and techniques may provide selective measurements for L1 and L2 mobility. For example, various methods are disclosed herein for using more cells as part of a trigger evaluation (e.g., triggering whether to handover to one or more candidate cells). One or more cells other than a primary serving cell may provide data for triggering the evaluation, and different conditions regarding which cells to use may apply. In addition to only Layer 3 (L3) RSRP, additional metrics may be used. For example, these systems and techniques may use fixed rules or dynamic rules to determine which cells to use for triggering the evaluation. Different combinations of cells to use in the evaluation may be determined.

[0048] In some aspects, additional metric types may be used in the triggered evaluation. For example, the additional metric types may include L3 cell quality, L3 synchronization signal-RSRP (SS-RSRP), L3 synchronization signal-signal to interference plus noise ratio (SS-SINR), beam or reference signal data, one or more reference signals in the cell, multiple transmit and receive point (mTRP) data, any combination thereof, and / or other metric types. Such data may be used to determine various conditions (e.g., low mobility conditions, high quality serving cell (or good serving cell) conditions, low quality candidate cell (or poor serving cell) conditions), such as based on various thresholds. These conditions may be compared to the thresholds to determine whether to perform a selective L1 measurement process, such as skipping the L1 measurement entirely or reducing the frequency of L1 measurements to save battery power. These systems and techniques may use various options to determine or perform a selective L1 measurement process, which may be based on the triggered evaluation.

[0049] Additional aspects of the disclosure are described in more detail below.

[0050] As used herein, the terms "user equipment" (UE) and "network entity" are not intended to be specific to or otherwise limited to any particular radio access technology (RAT), unless otherwise specified. In general, a UE can be any wireless communication device (e.g., a mobile phone, a router, a tablet computer, a laptop computer, and / or a tracking device), a wearable device (e.g., a smart watch, smart glasses, a wearable ring, and / or an extended reality (XR) device (such as a virtual reality (VR) headset, an augmented reality (AR) headset or glasses, or a mixed reality (MR) headset)), a vehicle (e.g., a car, a motorcycle, a bicycle, etc.), an aircraft (e.g., an airplane, a jet, an unmanned aerial vehicle (UAE) or drone, a helicopter, an airship, a glider, etc.), and / or an Internet of Things (IoT) device, etc., used by a user to communicate on a wireless communication network. A UE can be mobile or can be stationary (e.g., at certain times) and can communicate with a radio access network (RAN). As used herein, the term "UE" may be interchangeably referred to as an "access terminal" or "AT," "client device," "wireless device," "subscriber equipment," "subscriber terminal," "subscriber station," "user terminal" or "UT," "mobile device," "mobile terminal," "mobile station," or variations thereof. Generally speaking, a UE may communicate with a core network via a RAN, and through the core network, the UE may connect to external networks such as the Internet and to other UEs. Of course, other mechanisms for connecting to the core network and / or the Internet are also possible for the UE, such as through a wired access network, a wireless local area network (WLAN) network (e.g., based on IEEE 802.11 communication standards, etc.), and the like.

[0051] The network entity may be implemented in a converged or monolithic base station architecture, or alternatively, in a disaggregated base station architecture, and may include one or more of a central unit (CU), a distributed unit (DU), a radio unit (RU), a near real-time (near-RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC. A base station (e.g., having a converged / monolithic base station architecture or a disaggregated base station architecture) may operate according to one of several RATs for communicating with UEs (depending on the network in which it is deployed) and may alternatively be referred to as an access point (AP), a network node, a NodeB (NB), an evolved NodeB (eNB), a next-generation eNB (ng-eNB), a new radio (NR) NodeB (also referred to as a gNB or gNodeB), etc. A base station may primarily support radio access for UEs, including supporting data, voice, and / or signaling connections for the supported UEs. In some systems, a base station may provide edge node signaling functionality, while in other systems, a base station may provide additional control and / or network management functionality. The communication link by which a UE can transmit signals to a base station is called an uplink (UL) channel (e.g., a reverse traffic channel, a reverse control channel, an access channel, etc.). The communication link by which a base station can transmit signals to a UE is called a downlink (DL) or forward link channel (e.g., a paging channel, a control channel, a broadcast channel, or a forward traffic channel, etc.). As used herein, the term traffic channel (TCH) may refer to an uplink, a reverse or downlink, and / or a forward traffic channel.

[0052] The term "network entity" or "base station" (e.g., having an aggregated / monolithic base station architecture or a decomposed base station architecture) may refer to a single physical transmit receive point (TRP) or multiple physical TRPs that may or may not be co-located. For example, where the term "network entity" or "base station" refers to a single physical TRP, the physical TRP may be a base station antenna corresponding to a cell (or several cell sectors) of the base station. Where the term "network entity" or "base station" refers to multiple co-located physical TRPs, these physical TRPs may be antenna arrays of the base station (e.g., as in a multiple-input multiple-output (MIMO) system or where the base station employs beamforming). Where the term "base station" refers to multiple non-co-located physical TRPs, the physical TRPs may be a distributed antenna system (DAS) (a network of spatially separated antennas connected to a common source via a transmission medium) or a remote radio head (RRH) (a remote base station connected to a serving base station). Alternatively, the non-co-located physical TRPs may be a serving base station that receives measurement reports from a UE and a neighbor base station whose reference radio frequency (RF) signal (or simply "reference signal") the UE is measuring. Because, as used herein, a TRP is the point through which a base station transmits and receives wireless signals, references to transmitting from or receiving at a base station should be understood to refer to the specific TRP of a base station.

[0053] In some implementations of supporting UE positioning, a network entity or base station may not support wireless access for the UE (e.g., may not support data, voice, and / or signaling connections for the UE), but may instead transmit a reference signal to the UE to be measured by the UE and / or may receive and measure signals transmitted by the UE. Such a base station may be referred to as a positioning beacon (e.g., when transmitting a signal to the UE) and / or as a position measurement unit (e.g., when receiving and measuring a signal from the UE).

[0054] RF signals consist of electromagnetic waves of a given frequency that transmit information through the space between a transmitter and a receiver. As used herein, a transmitter may transmit a single "RF signal" or multiple "RF signals" to a receiver. However, due to the propagation characteristics of RF signals through multipath channels, a receiver may receive multiple "RF signals" corresponding to each transmitted RF signal. The same transmitted RF signal on different paths between a transmitter and a receiver may be referred to as a "multipath" RF signal. As used herein, an RF signal may also be referred to as a "wireless signal" or simply as a "signal" when the context clearly indicates that the term "signal" refers to either a wireless signal or an RF signal.

[0055] Various aspects of the systems and techniques described herein are discussed below with respect to the accompanying drawings. According to various aspects, Figure 1An example of a wireless communication system 100 is illustrated. The wireless communication system 100, which may also be referred to as a wireless wide area network (WWAN), may include various base stations 102 and various UEs 104. In some aspects, the base stations 102 may also be referred to as "network entities" or "network nodes." One or more of the base stations 102 may be implemented in a converged or monolithic base station architecture. Additionally or alternatively, one or more of the base stations 102 may be implemented in a disaggregated base station architecture and may include one or more of a central unit (CU), a distributed unit (DU), a radio unit (RU), a near real-time (near-RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC. The base stations 102 may include macrocell base stations (high-power cellular base stations) and / or small cell base stations (low-power cellular base stations). In one aspect, the macro cell base station may include an eNB and / or an ng-eNB (where the wireless communication system 100 corresponds to a long term evolution (LTE) network), or a gNB (where the wireless communication system 100 corresponds to an NR network), or a combination of both, and the small cell base station may include a femto cell, a pico cell, a micro cell, etc.

[0056] The base stations 102 may collectively form a RAN and interface with a core network 170 (e.g., an evolved packet core (EPC) or a 5G core (5GC)) via backhaul links 122, and may interface with one or more location servers 172 (which may be part of the core network 170 or external to the core network 170) via the core network 170. Among other functions, the base stations 102 may perform functions related to one or more of the following: delivering user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, RAN sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 may communicate with each other directly or indirectly (e.g., via the EPC or 5GC) via backhaul links 134 (which may be wired and / or wireless).

[0057] Base stations 102 can communicate wirelessly with UEs 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. In one aspect, base stations 102 in each coverage area 110 can support one or more cells. A "cell" is a logical communication entity used to communicate with a base station (e.g., on a certain frequency resource, referred to as a carrier frequency, component carrier, carrier, frequency band, etc.) and can be associated with an identifier (e.g., a physical cell identity or identifier (PCI), a virtual cell identifier (VCI), a cell global identifier (CGI)) to distinguish between cells operating on the same or different carrier frequencies. In some cases, different cells can be configured according to different protocol types (e.g., machine type communication (MTC), narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB), or other protocol types) that can provide access to different types of UEs. Because a cell is supported by a specific base station, the term "cell" can refer to either or both the logical communication entity and the base station supporting the logical communication entity, depending on the context. Furthermore, since the TRP is typically the physical transmission point of a cell, the terms "cell" and "TRP" may be used interchangeably. In some cases, the term "cell" may also refer to a geographic coverage area (e.g., a sector) of a base station, as long as a carrier frequency can be detected and used for communications within a portion of the geographic coverage area 110.

[0058] Although the geographic coverage areas 110 of adjacent macrocell base stations 102 may partially overlap (e.g., in a handover area), some areas of the geographic coverage areas 110 may substantially overlap with the larger geographic coverage area 110. For example, a small cell base station 102' may have a coverage area 110' that substantially overlaps with the coverage areas 110 of one or more macrocell base stations 102. A network that includes both small cell base stations and macrocell base stations may be referred to as a heterogeneous network. A heterogeneous network may also include a Home eNB (HeNB), which may provide service to a restricted group known as a Closed Subscriber Group (CSG).

[0059] The communication link 120 between the base station 102 and the UE 104 may include uplink (also referred to as a reverse link) transmissions from the UE 104 to the base station 102 and / or downlink (also referred to as a forward link) transmissions from the base station 102 to the UE 104. The communication link 120 may utilize MIMO antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link 120 may utilize one or more carrier frequencies. The allocation of carriers may be asymmetric for the downlink and uplink (e.g., more or fewer carriers may be allocated to the downlink than to the uplink).

[0060] The wireless communication system 100 may also include a WLAN AP 150 in communication with a WLAN station (STA) 152 via a communication link 154 in an unlicensed spectrum (e.g., 5 gigahertz (GHz)). When communicating in the unlicensed spectrum, the WLAN STA 152 and / or the WLAN AP 150 may perform a clear channel assessment (CCA) or a listen-before-talk (LBT) procedure before communicating to determine whether the channel is available. In some examples, the wireless communication system 100 may include devices (e.g., UEs, etc.) that communicate with one or more UEs 104, base stations 102, APs 150, etc. using an ultra-wideband (UWB) spectrum. The UWB spectrum may range from 3.1 GHz to 10.5 GHz.

[0061] The small cell base station 102' can operate in a licensed spectrum and / or an unlicensed spectrum. When operating in an unlicensed spectrum, the small cell base station 102' can employ LTE or NR technology and use the same 5 GHz unlicensed spectrum used by the WLAN AP 150. Small cell base stations 102' employing LTE and / or 5G in an unlicensed spectrum can improve coverage and / or increase capacity of an access network. NR in an unlicensed spectrum can be referred to as NR-U. LTE in an unlicensed spectrum can be referred to as LTE-U, Licensed Assisted Access (LAA), or MulteFire.

[0062] The wireless communication system 100 may also include a millimeter wave (mmW) base station 180 that can operate at mmW frequencies and / or near-mmW frequencies to communicate with the UE 182. The mmW base station 180 may be implemented in a converged or monolithic base station architecture, or alternatively, in a disaggregated base station architecture (e.g., including one or more of a CU, DU, RU, near-RT RIC, or non-RT RIC). Extremely high frequency (EHF) is a portion of the RF spectrum in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz, with wavelengths between 1 mm and 10 mm. Radio waves in this frequency band may be referred to as millimeter waves. Near-mmW frequencies extend down to frequencies of 3 GHz, with wavelengths of 100 mm. Super high frequency (SHF) frequency bands extend between 3 GHz and 30 GHz and are also referred to as centimeter waves. Communications using mmW and / or near-mmW radio frequency bands have high path loss and relatively short range. The mmW base station 180 and the UE 182 can utilize beamforming (transmit and / or receive) on the mmW communication link 184 to compensate for the extremely high path loss and short distance. In addition, it should be understood that in alternative configurations, one or more base stations 102 can also use mmW or near-mmW and beamforming for transmission. Therefore, it should be understood that the foregoing illustrations are merely examples and should not be construed as limiting the various aspects disclosed herein.

[0063] In some aspects related to 5G, the spectrum in which a wireless network node or entity (e.g., base station 102 / 180, UE 104 / 182) operates is divided into multiple frequency ranges: FR1 (from 450 megahertz (MHz) to 6000 MHz), FR2 (from 24250 MHz to 52600 MHz), FR3 (above 52600 MHz), and FR4 (between FR1 and FR2). In a multi-carrier system such as 5G, one of the carrier frequencies is referred to as a "primary carrier" or "anchor carrier" or "primary serving cell" or "PCell," and the remaining carrier frequencies are referred to as "secondary carriers" or "secondary serving cells" or "SCells." In carrier aggregation, the anchor carrier is a carrier operating on the primary frequency (e.g., FR1) used by the UE 104 / 182 and the cell in which the UE 104 / 182 performs an initial radio resource control (RRC) connection establishment procedure or initiates an RRC connection re-establishment procedure. The primary carrier carries all common control channels as well as UE-specific control channels and can be a carrier in a licensed frequency (however, this is not always the case). A secondary carrier is a carrier operating on a second frequency (e.g., FR2) that can be configured and used to provide additional radio resources once an RRC connection is established between the UE 104 and the anchor carrier. In some cases, the secondary carrier can be a carrier in an unlicensed frequency. The secondary carrier may contain only necessary signaling information and signals, for example, since both the primary uplink carrier and the primary downlink carrier are typically UE-specific, those UE-specific signaling information and signals may not be present in the secondary carrier. This means that different UEs 104 / 182 in a cell can have different downlink primary carriers. The same is true for the uplink primary carrier. The network can change the primary carrier for any UE 104 / 182 at any time. This is done, for example, to balance the load on the different carriers. Since a "serving cell" (whether PCell or SCell) corresponds to a carrier frequency or component carrier that some base station is using for communication, the terms "cell", "serving cell", "component carrier" and "carrier frequency" may be used interchangeably.

[0064] For example, still referring to Figure 1, one of the frequencies used by the macrocell base station 102 may be an anchor carrier (or "PCell"), and the other frequencies used by the macrocell base station 102 and / or the mmW base station 180 may be secondary carriers ("SCells"). In carrier aggregation, the base station 102 and / or the UE 104 may use spectrum with a bandwidth of up to Y MHz (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz) per carrier, with up to a total of Yx MHz (x component carriers) in each direction for transmission. The component carriers may or may not be spectrally adjacent to each other. The allocation of carriers may be asymmetric with respect to the downlink and uplink (e.g., more or fewer carriers may be allocated to the downlink than to the uplink). Simultaneous transmission and / or reception of multiple carriers enables the UE 104 / 182 to significantly increase its data transmission and / or reception rate. For example, two 20 MHz aggregated carriers in a multi-carrier system would theoretically result in a doubled data rate (i.e., 40 MHz) compared to the data rate achieved with a single 20 MHz carrier.

[0065] To operate on multiple carrier frequencies, the base station 102 and / or the UE 104 may be equipped with multiple receivers and / or transmitters. For example, the UE 104 may have two receivers, namely, "receiver 1" and "receiver 2," where "receiver 1" is a multi-band receiver that can be tuned to either frequency band (i.e., carrier frequency) 'X' or frequency band 'Y', while "receiver 2" is a single-band receiver that can be tuned to only frequency band 'Z'. In this example, if the UE 104 is being served in frequency band 'X', frequency band 'X' will be referred to as the PCell or active carrier frequency, and "receiver 1" will need to tune from frequency band 'X' to frequency band 'Y' (SCell) to measure frequency band 'Y' (and vice versa). In contrast, regardless of whether the UE 104 is being served in frequency band 'X' or frequency band 'Y', due to the separate "receiver 2," the UE 104 can measure frequency band 'Z' without interrupting service on frequency band 'X' or frequency band 'Y'.

[0066] The wireless communication system 100 may further include a UE 164 that may communicate with the macrocell base station 102 over a communication link 120 and / or with the mmW base station 180 over a mmW communication link 184. For example, the macrocell base station 102 may support a PCell and one or more SCells for the UE 164, and the mmW base station 180 may support one or more SCells for the UE 164.

[0067] The wireless communication system 100 may also include one or more UEs (such as UE 190) that are indirectly connected to one or more communication networks via one or more device-to-device (D2D) or peer-to-peer (P2P) links (referred to as “side links”). Figure 1 In the example of FIG, UE 190 has a D2D P2P link 192 with one of UEs 104 connected to one of base stations 102 (e.g., UE 190 can indirectly obtain cellular connectivity through the D2D P2P link), and has a D2D P2P link 194 with WLAN STA 152 connected to WLAN AP 150 (UE 190 can indirectly obtain WLAN-based Internet connectivity through the D2D P2P link). In one example, D2D P2P links 192 and 194 can use any well-known D2D RAT (such as LTE Direct (LTE-D), Wi-Fi Direct (Wi-Fi-D), etc.) to support.

[0068] Figure 2 A block diagram of a design of a base station 102 and a UE 104 is shown that enables sending and processing of signals exchanged between the UE and the base station according to some aspects of the present disclosure. Design 200 includes components of the base station 102 and the UE 104, which may be Figure 1 One of base stations 102 and one of UE 104. Base station 102 may be equipped with T antennas 234a through 234t, and UE 104 may be equipped with R antennas 252a through 252r, where in general T ≥ 1 and R ≥ 1.

[0069] At base station 102, transmit processor 220 may receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Modulators 232a through 232t are illustrated as combined modulator-demodulator (MOD-DEMOD). In some cases, the modulator and demodulator may be separate components. Each of modulators 232a through 232t may process a corresponding output symbol stream (e.g., for an orthogonal frequency division multiplexing (OFDM) scheme, etc.) to obtain an output sample stream. Each of modulators 232a through 232t may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals may be transmitted from modulators 232a through 232t via T antennas 234a through 234t, respectively. According to certain aspects described in greater detail below, position encoding may be utilized to generate a synchronization signal to convey additional information.

[0070] At UE 104, antennas 252a to 252r can receive downlink signals from base station 102 and / or other base stations and can provide the received signals to demodulators (DEMODs) 254a to 254r, respectively. Demodulators 254a to 254r are shown as combined modulator-demodulators (MOD-DEMODs). In some cases, the modulator and demodulator can be separate components. Each demodulator in demodulators 254a to 254r can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator in demodulators 254a to 254r can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 260, and provide decoded control information and system information to the controller / processor 280. The channel processor may determine, among other things, reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), and / or channel quality indicator (CQI).

[0071] On the uplink, at the UE 104, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.) from the controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals (e.g., based at least in part on a beta value or set of beta values ​​associated with the one or more reference signals). The symbols from the transmit processor 264 may be precoded by the TX-MIMO processor 266 (if applicable), further processed by the modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 102. At base station 102, uplink signals from UE 104 and other UEs may be received by antennas 234a through 234t, processed by demodulators 232a through 232t, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 104. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller (processor) 240. Base station 102 may include a communication unit 244 and communicate with network controller 231 via communication unit 244. Network controller 231 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0072] In some aspects, one or more components of the UE 104 may be included in a housing. The controller 240 of the base station 102, the controller / processor 280 of the UE 104, and / or Figure 2 Any other component of may perform one or more techniques associated with implicit UCI β value determination for NR.

[0073] Memories 242 and 282 may store data and program codes for base station 102 and UE 104, respectively. A scheduler 246 may schedule UEs for data transmission on the downlink, uplink, and / or sidelink.

[0074] In some aspects, the deployment of a communication system (such as a 5G New Radio (NR) system) can be arranged in a variety of ways with various components or parts. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or network equipment (such as a base station (BS)) or one or more units (or one or more components) that perform base station functionality can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP), or a cell, etc.) can be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a decomposed base station.

[0075] A converged base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack that is physically or logically distributed across two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, namely a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0076] Base station type operation or network design can take into account the aggregated nature of base station functionality. For example, a disaggregated base station can be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Disaggregation can include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which can enable flexibility in network design. Various units of a disaggregated base station or disaggregated RAN architecture can be configured for wired or wireless communication with at least one other unit.

[0077] Figure 3 A diagram illustrating an example decomposed base station 300 architecture is shown. The decomposed base station 300 architecture may include one or more central units (CUs) 310, which may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 325 via an E2 link, or a non-real-time (non-RT) RIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CUs 310 may communicate with one or more distributed units (DUs) 330 via corresponding midhaul links, such as an F1 interface. The DUs 330 may communicate with one or more radio units (RUs) 340 via corresponding fronthaul links. The RUs 340 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 340.

[0078] Each of these units (e.g., CU 310, DU 330, RU 340, as well as near-RT RIC 325, non-RT RIC 315, and SMO framework 305) may include one or more interfaces or be coupled to one or more interfaces that are configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of these units, or an associated processor or controller that provides instructions to the communication interface of these units, may be configured to communicate with one or more of the other units via the transmission medium. For example, these units may include a wired interface that is configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as a radio frequency (RF) transceiver) that is configured to receive signals or transmit signals to one or more of the other units via a wireless transmission medium, or both.

[0079] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), or service data adaptation protocol (SDAP), among others. Each control function may be implemented using an interface that is configured to perform signaling communications with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may perform bidirectional communication with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0080] The DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more higher physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, or modulation and demodulation), depending at least in part on a functional split, such as that defined by the 3rd Generation Partnership Project (3GPP). In some aspects, the DU 330 may also host one or more lower PHY layers. Each layer (or module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0081] Lower layer functionality may be implemented by one or more RUs 340. In some deployments, a RU 340 controlled by a DU 330 may correspond to a logical node that hosts RF processing functionality or low PHY layer functionality (such as performing Fast Fourier Transform (FFT), Inverse FFT (iFFT), digital beamforming, or Physical Random Access Channel (PRACH) extraction and filtering), or both, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 340 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, both real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable the DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0082] The SMO framework 305 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 305 can be configured to interact with a cloud computing platform (such as Open Cloud (O-Cloud) 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, and near-RT RIC 325. In some implementations, the SMO framework 305 can communicate with hardware aspects of the 4G RAN (such as Open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with one or more RUs 340 via the O1 interface. The SMO framework 305 may also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305 .

[0083] The non-RT RIC 315 can be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 can be coupled to or in communication with the near-RT RIC 325 (e.g., via an A1 interface). The near-RT RIC 325 can be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources through data collection and actions via an interface (e.g., via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0084] In some implementations, the non-RT RIC 315 may receive parameters or external enrichment information from an external server in order to generate an AI / ML model to be deployed in the near-RT RIC 325. Such information may be utilized by the near-RT RIC 325 and may be received from non-network data sources or from network functions at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0085] Figure 4 An example of a computing system 470 of a wireless device 407 is illustrated. The wireless device 407 may include a client device such as a UE (e.g., UE 104, UE 152, UE 190) or other type of device that can be used by an end user (e.g., a station (STA) configured to communicate using a Wi-Fi interface). For example, the wireless device 407 may include a mobile phone, a router, a tablet computer, a laptop computer, a tracking device, a wearable device (e.g., a smartwatch, glasses, an extended reality (XR) device (such as a virtual reality (VR), augmented reality (AR), or mixed reality (MR) device), etc.), an Internet of Things (IoT) device, a vehicle, an aircraft, and / or another device configured to communicate via a wireless communication network. The computing system 470 includes software and hardware components that can be electrically coupled or communicatively coupled via a bus 489 (or can communicate in other ways, as the case may be). For example, the computing system 470 includes one or more processors 484. The one or more processors 484 may include one or more CPUs, ASICs, FPGAs, APs, GPUs, VPUs, NSPs, microcontrollers, dedicated hardware, any combination thereof, and / or other processing devices or systems. The one or more processors 484 may use a bus 489 to communicate between cores and / or with one or more memory devices 486.

[0086] The computing system 470 may also include one or more memory devices 486, one or more digital signal processors (DSPs) 482, one or more SIMs 474, one or more modems 476, one or more wireless transceivers 478, an antenna 487, one or more input devices 472 (e.g., a camera, a mouse, a keyboard, a touch-sensitive screen, a touchpad, a keypad, and / or a microphone, etc.), and one or more output devices 480 (e.g., a display, a speaker, and / or a printer, etc.).

[0087] In some aspects, the computing system 470 may include one or more RF interfaces configured to send and / or receive radio frequency (RF) signals. In some examples, the RF interface may include components such as a modem 476, a wireless transceiver 478, and / or an antenna 487. The one or more wireless transceivers 478 may send and receive wireless signals (e.g., signals 488) from one or more other devices via the antenna 487, such as other wireless devices, network devices (e.g., base stations such as eNBs and / or gNBs, Wi-Fi access points (APs) such as routers or range extenders, etc.), and / or cloud networks, etc. In some examples, the computing system 470 may include multiple antennas or antenna arrays that can facilitate simultaneous transmit and receive functionality. Antenna 487 may be an omnidirectional antenna so that radio frequency (RF) signals can be received from all directions and transmitted in all directions. The wireless signal 488 may be sent via a wireless network. The wireless network may be any wireless network, such as a cellular or telecommunications network (e.g., 3G, 4G, 5G, etc.), a wireless local area network (e.g., a WiFi network), a Bluetooth TM network and / or other networks.

[0088] In some examples, wireless signals 488 can be transmitted directly to other wireless devices using sidelink communications (e.g., using a PC5 interface, using a DSRC interface, etc.). Wireless transceiver 478 can be configured to transmit RF signals via antenna 487 for performing sidelink communications according to one or more transmit power parameters that can be associated with one or more regulatory modes. Wireless transceiver 478 can also be configured to receive sidelink communication signals having different signal parameters from other wireless devices.

[0089] In some examples, one or more wireless transceivers 478 may include an RF front end that includes one or more components such as amplifiers, mixers for downconverting signals (also known as signal multipliers), frequency synthesizers (also known as oscillators) that provide signals to the mixers, baseband filters, analog-to-digital converters (ADCs), one or more power amplifiers, etc. The RF front end may generally handle the selection of wireless signals 488 and the conversion of the wireless signals to baseband frequencies or intermediate frequencies, and may convert the RF signals to the digital domain.

[0090] In some cases, computing system 470 may include a coding-decoding device (or CODEC) configured to encode and / or decode data transmitted and / or received using one or more wireless transceivers 478. In some cases, computing system 470 may include an encryption-decryption device or component configured to encrypt and / or decrypt data transmitted and / or received by one or more wireless transceivers 478 (e.g., according to the AES and / or DES standards).

[0091] One or more SIMs 474 can each securely store an International Mobile Subscriber Identity (IMSI) number and associated keys assigned to a user of wireless device 407. The IMSI and keys can be used to identify and authenticate the subscriber when accessing a network provided by a network service provider or operator associated with one or more SIMs 474. One or more modems 476 can modulate one or more signals to encode information for transmission using one or more wireless transceivers 478. One or more modems 476 can also demodulate signals received by one or more wireless transceivers 478 to decode the transmitted information. In some examples, one or more modems 476 can include a Wi-Fi modem, a 4G (or LTE) modem, a 5G (or NR) modem, and / or other types of modems. One or more modems 476 and one or more wireless transceivers 478 can be used to communicate data from one or more SIMs 474.

[0092] The computing system 470 may also include (and / or be in communication with) one or more non-transitory machine-readable storage media or storage devices (e.g., one or more memory devices 486), which may include, but are not limited to, local and / or network-accessible storage, disk drives, drive arrays, optical storage devices, solid-state storage devices (such as RAM and / or ROM), which may be programmable and / or flash-updatable, etc. Such storage devices may be configured to implement any suitable data storage, including, but not limited to, various file systems and / or database structures, etc.

[0093] In various aspects, the functionality may be stored as one or more computer program products (e.g., instructions or code) in the memory device 486 and executed by the one or more processors 484 and / or the one or more DSPs 482. The computing system 470 may also include software elements (e.g., located within the one or more memory devices 486) including, for example, an operating system, device drivers, executable libraries, and / or other code, such as one or more applications, which may comprise computer programs that implement the functionality provided by the various aspects and / or may be designed to implement methods and / or configure systems, as described herein.

[0094] As previously noted, systems and techniques are described herein for signaling cell changes and / or beam changes. For example, these systems and techniques can provide layer 1 (L1) and / or layer 2 (L2) signaling for cell changes and / or beam changes. Alternatively or additionally, in some aspects, these systems and techniques can provide a selective L1 measurement process in a more flexible manner than previously available for L2 and L2 mobility.

[0095] In some networks, a unified transmission configuration indicator (TCI) may be used to indicate a common TCI state for multiple channels, multiple reference signals (RSs), or one channel and one RS. For example, a network may support different types of unified TCI, such as type 1 (where a joint TCI state indicates a common beam for at least one downlink channel and / or downlink RS in addition to at least one uplink channel and / or uplink RS), type 2 (where a downlink TCI state indicates a common beam for more than one downlink channel and / or downlink RS), and / or type 3 (where a common TCI state indicates a common beam for more than one uplink channel and / or uplink RS).

[0096] For at least 3GPP Release 18 (R18) L1 / L2-based mobility, L1 / L2 signaling for serving cell changes will be specified. For example, to specify mechanisms and procedures for L1 / L2-based inter-cell mobility for mobility latency reduction, the following issues may be addressed: configuration and maintenance of multiple candidate cells to allow rapid application of candidate cell configurations [RAN2, RAN3]; dynamic switching mechanisms among candidate serving cells (e.g., including special cells (SpCells) and SCells) for potential application scenarios based on L1 / L2 signaling [RAN2, RAN1]; L1 enhancements for inter-cell beam management (including L1 measurements and reporting) and beam indication [RAN1, RAN2] (Note 1: Early RAN2 participation is necessary, including the possibility of further clarification of the interaction between this item and the previous item); timing advance management [RAN1, RAN2]; and CU-DU interface signaling to support L1 / L2 mobility (if required) [RAN3].

[0097] The systems and techniques described herein can address at least a dynamic switching mechanism among candidate serving cells (including SpCells and SCells) for potential applicable scenarios based on L1 / L2 signaling and L1 enhancements for beam indication. For example, these systems and techniques can determine that a trigger condition has been met and, based on the trigger condition, can apply a selective L1 measurement strategy (e.g., skipping L1 measurements or reducing the frequency of L1 measurements). In some cases, by performing selective L1 measurements, these systems and techniques can result in saving UE battery power when transitioning the UE from a serving cell to a candidate cell.

[0098] The term SpCell refers to a special cell. In some cases, such as for dual connectivity operation, the term special cell (SpCell) can refer to the primary cell (PCell) of a primary cell group (MCG) or the PSCell of a secondary cell group (SCG), depending on whether the MAC entity is associated with an MCG or SCG. Otherwise, the term special cell can refer to the PCell. Special cells can support physical uplink control channel (PUCCH) transmission and contention-based random access and are always activated in some cases.

[0099] In some cases, with respect to pre-configured candidate cells for L1 / L2-based cell change, a set of candidate cells may be configured as serving cells within a cell group for at least SpCell reselection. A first option (denoted as Option 1) and a second option (denoted as Option 2) are as follows (wherein the difference between Option 1 and Option 2 is indicated by text between brackets, e.g., "<difference>"): Option 1: A subset of configured serving cells is designated as candidate cells for SpCell selection; only one candidate cell is selected as an SpCell at a given time, and <the remaining candidate cells not selected as SpCells are not used for data and control communications>; and each serving cell configured in the cell group but not in the subset of candidate cells may be activated or deactivated as an SCell for data and / or control communications.

[0100] The second option (option 2) includes: any serving cell or a subset of serving cells configured in the cell group can be a candidate cell: dedicated cell switching signaling selects the candidate cell as the new SpCell; the selected candidate cell is previously activated in preparation for data and / or control communications, for example, as an activated SCell, or is activated or deactivated before selection, for example, as a deactivated SCell; in order to save overhead, some serving cell configurations for SpCell functions may be valid only when the candidate cell is selected as a SpCell (for example, SSB, RACH (or PRACH), paging, SI configuration); and <if not selected as a SpCell, each serving cell included in the candidate cells configured in the cell group may be activated or deactivated as an SCell for data and control communications>.

[0101] For both option 1 and option 2, the activated SCells that are not selected as the new SpCell after selection may have the following behavior: these activated SCells are implicitly deactivated after the SpCell change and may be reactivated later after potential RRC reconfiguration; or these activated SCells remain activated after the SpCell change.

[0102] In some examples, in the case of carrier aggregation, separate cell signaling for PCell change and / or SCell change can be used to implement separate cell selection. In some aspects, PCell selection based on beam indication can be performed. In some cases, SCell selection can be based on legacy protocols and / or new L1 / L2 signaling, as further discussed herein. In some instances, a single PCell (e.g., without carrier aggregation and / or dual connectivity) can be selected from a pre-configured set of candidate PCells. In some examples, the PCell change can include switching the roles between the PCell and the SCell from a pre-configured set of candidate PCells.

[0103] Figure 5 An example of a single PCell change without carrier aggregation is illustrated 500. In some aspects, a UE may switch from an old PCell to a new PCell from among a pre-configured set of candidate PCells. Figure 5 Another example 502 of a single special cell (SpCell) change without carrier aggregation is also illustrated. In R18 L1 / L2 mobility, at least the SpCell can be updated via L1 / L2 signaling based on L1 measurements. Example 502 provides context for the present claims related to a selective L1 measurement strategy, which can include one or more of skipping L1 measurements or reducing the frequency of L1 measurements.

[0104] Figure 6 Examples of separate PCell and SCell changes in carrier aggregation are illustrated. In some examples, the old SCell can be changed to a new PCell. In some cases, the old PCell can be changed to a new SCell. In some examples, the new SCell can be implicitly deactivated after the SpCell change and can be reactivated later after a potential RRC reconfiguration; or the new SCell can remain activated after the SpCell change.

[0105] Figure 7 An example of cell group selection based on which SpCells and SCells can be switched together in the case of carrier aggregation is illustrated. In some aspects, the cell group switching signaling can be based on, for example, Figure 6 In some examples, the UE may switch from an old cell group to a new cell group, such as Figure 7 exemplified.

[0106] Figure 8 Examples of pre-configured candidate cells for L1 / L2 based SpCell changes are illustrated. In some examples, Figure 8This may correspond to Option 1 described above, in which a subset of serving cells is dedicated as candidate cells for SpCell selection (e.g., such as candidate Pcells in the CellGroupConfig information element (IE), including candidate component carriers (CC1) to candidate CC N). In some cases, only one candidate cell may be selected as the SpCell at a given time, and the remaining candidate cell or cells that are not selected may not be used for data and control communications.

[0107] Figure 9 Another example of pre-configured candidate cells for L1 / L2-based SpCell selection is illustrated. Figure 9 As illustrated, in the case of a single serving cell without carrier aggregation or dual connectivity, a single PCell may be configured.

[0108] Figure 10 An example of SpCell selection is illustrated in which non-selected cells are not used for data and control communications. In some aspects, among the candidate SpCells, only the selected SpCell may have an activated Transmit Configuration Indicator (TCI) state.

[0109] Figure 11 Another example of SpCell selection is illustrated, in which unselected cells are not used for data and control communications. In some cases, among candidate SpCells, both the selected and unselected SpCells may have an activated TCI state. In some examples, unselected SpCells are not available for data / control.

[0110] Figure 12 An example of SpCell selection is illustrated, in which unselected cells can be used for data and control communications. For example, among the configured component carriers (CCs) for carrier aggregation, a group of component carriers can also be candidate cells for SpCell selection (e.g., CC1 to N). In some aspects, Figure 12 The example illustrated is the same as Figure 10 or Figure 11 The difference between the illustrated examples is that candidate cells that are not selected as SpCells can be used for data and control communications (e.g., as activated SCells). Figure 12 The illustrated examples may include carrier aggregation. In some aspects related to a single serving cell, this carrier aggregation may be virtually implemented by activating only the SpCell while keeping all SCells deactivated.

[0111] The objectives of this work item are found in the R18 description of L1 / L2 mobility. These objectives include: to specify mechanisms and procedures for L1 / L2-based inter-cell mobility for mobility delay reduction in the following areas: (1) configuration and maintenance of multiple candidate cells to allow rapid application of configuration for candidate cells [RAN2, RAN3]; (2) dynamic switching mechanisms among candidate serving cells (including SpCells and SCells) for potential applicable scenarios based on L1 / L2 signaling [RAN2, RAN1]; and (3) L1 enhancements for inter-cell beam management (including L1 measurements and reporting) and beam indication [RAN1, RAN2]. Early RAN2 involvement may be necessary, including further clarification of the possibility of interaction between item (3) and item (2). Other areas include: (4) timing advance management [RAN1, RAN2] and (5) CU-DU interface signaling to support L1 / L2 mobility (if required) [RAN3]. FR2-specific enhancements (if any) are not excluded.

[0112] In addition, the L1 / L2-based inter-cell mobility procedures are applicable to the following scenarios: (1) standalone, CA, and NR-DC cases with serving cell change within one CG; (2) intra-DU case and intra-CU inter-DU case (applicable to standalone and CA: no new RAN interface is expected); (3) both intra-frequency and inter-frequency are within range; (4) both FR1 (frequency range 1, including bands below 6 GHz) and FR2 (frequency range 2, including millimeter wave (mmwave) at 6 GHz or higher) are within range; and (5) the source cell and target cell can be synchronized or unsynchronized. These objectives provide the basis for the improvements related to the selective L1 measurement technology disclosed in this article.

[0113] As previously noted, the systems and techniques described herein can apply a selective L1 measurement strategy (e.g., skipping L1 measurements or reducing the frequency of L1 measurements) based on one or more triggering conditions. In one illustrative example, these systems and techniques can perform various operations, such as a first operation to determine the cells in the trigger evaluation (e.g., the cells to be evaluated for the triggering conditions), a second operation to determine the cell metric type to be used for the evaluation, a third operation to determine the triggering conditions (allowing for more flexible combinations than current systems), and a fourth operation to include the UE's response to performing the selective L1 measurements. The first operation can allow the evaluation of the triggering conditions to be performed on the primary cell and other candidate cells, whereas current systems only apply the evaluation on the UE's primary serving cell, as described above. The second operation can allow the evaluation of various metrics to be applied, whereas current systems only apply the L3 RSRP metric, as described above.

[0114] These systems and techniques can utilize various options for the first operation of determining cells to use in trigger evaluation. For example, a first option for the first operation includes a fixed rule whereby serving and / or candidate PCells, PSCells are determined to be used in trigger evaluation. A second option for the first operation includes determining the serving cells / candidate cells to be used in trigger evaluation by base station configuration. A third option for the first operation includes determining any or all serving cells / candidate cells, including or excluding PSCells, to be used in trigger evaluation.

[0115] These systems and techniques may also utilize various options for a second operation that determines a cell metric type. For example, a first option for the second operation includes a metric related to the cell level, for example, L3 cell quality (such as L3 SS-RSRP or L3 SS-SINR) or L1 cell quality (such as L1-SINR, L1-RSRP). An illustrative example of the first option includes a cell average of the qualities of multiple RSs in a cell. A second option for the second operation includes a metric related to the first X RSs in the cell (where X may be equal to 1 or greater). A third option for the second operation includes a metric related to all or at least one predetermined RS (e.g., a beam failure detection RS) in the cell. A fourth option for the second operation includes a metric related to an mTRP operation, for example, in an mTRP operation indicating 2 TCIs, a metric of the QCL RSs of 2 or at least 1 indicated TCI is used for the cell metric type.

[0116] These systems and techniques may also utilize various options for determining a third operation of a triggering condition, such as a low mobility condition (e.g., one or more serving cells / candidate cells are in low mobility), a serving cell with a high quality (or too good) condition (e.g., a high quality serving cell and one serving cell / candidate cell among multiple serving cells / candidate cells with high quality), a serving cell with a high quality (or too good) condition and a candidate cell with a low quality (or too poor) condition (e.g., a serving cell with high quality and all candidate cells with low quality, or a serving cell with high quality and an individual cell with low quality).

[0117] These systems and techniques may also utilize various options for a fourth operation, including a response of the UE to performing selective L1 measurements. A first option for the fourth operation includes skipping L1 measurements. A second option for the fourth operation includes reducing the L1 measurement frequency (e.g., increasing the measurement periodicity). In one illustrative example, when a cell reaches or satisfies a triggering condition, the UE may skip measurements corresponding to the cell, or may reduce the measurement frequency for the cell. In another illustrative example, when a cell reaches or satisfies a triggering condition, the UE may skip measurements corresponding to all cells, or may reduce the measurement frequency for these cells. In another illustrative example, when all cells reach or satisfy the triggering condition, the UE may skip measurements corresponding to all cells, or may reduce the measurement frequency for these cells.

[0118] In one illustrative example of performing the techniques described herein, a UE may be in a low mobility condition, in which case L1 measurements (e.g., for lower layer triggered mobility (LTM)) are not needed. For example, in L1 / L2 based mobility, when the UE enables event-triggered L1 measurements for a candidate cell, the UE may receive a low mobility configuration (e.g., with S SearchDeltaP-Connected and T SearchDeltaP-Connected The value of S SearchDeltaP-Connected Specifies the threshold (in decibels (dB)) for the received signal to use for the relaxation measurement, and T SearchDeltaP-Connected specifies a time period during which received signals are evaluated for relaxed measurements), and the UE may perform selective L1 measurements when in low mobility conditions.

[0119] In some aspects, relaxed measurement criteria for low mobility conditions are met when the following conditions are met:

[0120] (Cell Metrics Ref –Cell Metrics) Search DeltaP-Connected .

[0121] In operation 2, a cell metric is determined (e.g., the current L1 or L3 RSRP measurement (dB) of the cell based on SSB). In operation 2, a cell metric is determined Ref (e.g., reference L1 or L3 RSRP measurement (dB) based on SSB of the reference cell, set as follows: after receiving the low mobility criteria configuration, or if (cell metric - cell metric Ref )>0, or if the relaxed measurement criteria have not been met for TSearchDeltaP-Connected, the UE may (or in some cases should) set the cell measurement Ref The value of is set to the current cell metric value of the cell.

[0122] ​In another illustrative example of performing the techniques described herein, the UE may be in a high-quality cell (or good cell quality) condition, in which case L1 measurement (e.g., for LTM) is not required. For example, in L1 / L2-based mobility, when the UE enables event-triggered L1 measurement for a candidate cell, the UE may receive a high-quality or good cell quality configuration (e.g., with values ​​of Qin and / or X) and may perform selective L1 measurement when in a high-quality or good cell quality condition.

[0123] In some aspects, relaxed measurement criteria for good cell quality conditions are met when the following conditions are met:

[0124] Cell metric > Q in +XdB, or cell metric >Q in .

[0125] In operation 2, a cell metric (e.g., a current L1 or L3 RSRP measurement (dB) based on an SSB of the cell) is determined. The threshold Qin may be configurable or fixed. The item X may be configured as a parameter offset (also referred to herein as an offset parameter) in a field goodCellEvaluationLTM or an information element (IE). In some cases, the field goodCellEvaluationLTM may be associated with a good cell quality criterion in a radio resource control (RRC) connection (RRC_CONNECTED) message indicating that the radio resource control is in a connected state for cells operating in the first frequency range and the second frequency range, respectively.

[0126] In another illustrative example of performing the techniques described herein, the candidate cell may be in a poor cell quality condition compared to the active cell, in which case L1 measurements (e.g., for LTM) are not needed. For example, in L1 / L2 based mobility, when the UE enables L1 measurements for the candidate cell, the UE may receive a low quality or poor candidate cell configuration (e.g., with S SearchDeltaP-Connected value), and selective L1 measurement can be performed when the candidate cell is in a low-quality or poor candidate cell scenario.

[0127] In some aspects, relaxed measurement criteria for poor candidate cell conditions are met for a candidate cell when one or more of the following conditions are met:

[0128] Option 1: (Cell Metrics 候选 –Cell metrics 服务 ) SearchDeltaP-Connected ,

[0129] ​Option 2: Cell Metrics 候选 SearchDeltaP-Connected ,

[0130] In operation 2, cell metric candidates (eg, current L1 or L3 RSRP measurement (dB) based on SSB of candidate cells) are determined. In operation 2, cell metric services (eg, current L1 or L3 RSRP measurement (dB) based on SSB of active cells) are also determined.

[0131] Figure 13A is a flow chart illustrating an example of a process 1300 for performing wireless communications according to some examples disclosed herein. The operations of process 1300 may be implemented as a process on one or more processors (e.g., Figure 15 Process 1300 may be performed by any device or group of devices. The operations of process 1300 may be implemented as software components executed and run on one or more processors (e.g., Figure 15 software components executed and run on the processor 1510 and / or other processors).

[0132] At block 1302 , process 1300 includes determining (eg, via a UE or via computing device 1500 ) whether relaxed measurement criteria for low mobility are met based on at least one reference measurement of a cell and at least one current measurement of the cell.

[0133] At box 1304, process 1300 includes: based on satisfying the relaxed measurement criteria for low mobility, performing (e.g., via the UE or via computing device 1500) selective layer 1 (L1) measurements for the cell, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0134] In some aspects, the techniques described herein relate to a method or process 1300 wherein the selective L1 measurement includes one of suspending L1 measurement for the cell or reducing the frequency of the L1 measurement for the cell.

[0135] In some aspects, the technology described herein relates to a method or process in which determining the relaxed measurement criterion includes comparing a difference between the at least one current measurement and the at least one reference measurement to a threshold value.

[0136] In some aspects, the technology described herein relates to a method or process 1300, wherein the at least one reference measurement comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell, and wherein the at least one current measurement comprises an SSB-based current L1 RSRP measurement of the cell. ​

[0137] In some aspects, the technology described herein relates to a method or process 1300, wherein the at least one reference measurement includes a reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell based on a first synchronization signal block (SSB), and wherein the at least one current measurement includes a current L3 RSRP measurement of the cell based on a second SSB.

[0138] In some aspects, the technology described herein relates to a method or process 1300 that further includes determining the at least one reference measurement based on at least one of: receiving a low mobility criteria configuration, the at least one reference measurement having a difference greater than 0 from the at least one current measurement, or not satisfying relaxed measurement criteria within a time period.

[0139] In some aspects, the technology described herein relates to a method or process 1300 in which a current measurement for the cell is set as a reference measurement for the cell for the relaxed measurement criteria based on at least one of: determining the relaxed measurement criteria, the reference measurement having a difference greater than zero from the current measurement, or the relaxed measurement criteria not being met for a period of time.

[0140] In some aspects, the techniques described herein relate to a method or process 1300, wherein the cell comprises one of a source cell, an active cell, a serving cell, a target cell, a non-serving cell, or the candidate cell.

[0141] In some aspects, the techniques described herein relate to a method or process 1300 in which the UE is configured to receive layer 1 measurement data for a candidate cell.

[0142] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor, coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for low mobility are satisfied based on at least one reference measurement of a cell and at least one current measurement of the cell; and based on satisfying the relaxed measurement criteria for low mobility, perform a selective Layer 1 (L1) measurement for the cell, the L1 measurement associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell.

[0143] In some aspects, the techniques described herein relate to an apparatus wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing a frequency of the L1 measurement for the cell.

[0144] In some aspects, the technology described herein relates to an apparatus wherein, to determine the relaxed measurement criterion, the at least one processor is configured to compare a difference between the at least one current measurement and the at least one reference measurement to a threshold value.

[0145] In some aspects, the technology described herein relates to an apparatus, wherein the at least one reference measurement comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell, and wherein the at least one current measurement comprises an SSB-based current L1 RSRP measurement of the cell.

[0146] In some aspects, the technology described herein relates to an apparatus wherein the at least one reference measurement comprises a reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell based on a first synchronization signal block (SSB), and wherein the at least one current measurement comprises a current L3 RSRP measurement of the cell based on a second SSB.

[0147] In some aspects, the technology described herein relates to an apparatus wherein the at least one processor is configured to determine the at least one reference measurement based on at least one of: receiving a low mobility criteria configuration, the at least one reference measurement having a difference from the at least one current measurement greater than zero, or the relaxed measurement criteria not being met within a time period.

[0148] In some aspects, the technology described herein relates to an apparatus in which the at least one processor is configured to set a current measurement for the cell as a reference measurement for the cell for the relaxed measurement criterion based on at least one of: determining the relaxed measurement criterion, a difference between the reference measurement and the current measurement being greater than 0, or the relaxed measurement criterion not being met for a period of time.

[0149] In some aspects, the techniques described herein relate to an apparatus, wherein the cell comprises one of a source cell, an active cell, a serving cell, a target cell, a non-serving cell, or the candidate cell.

[0150] In some aspects, the techniques described herein relate to an apparatus configured to receive layer 1 measurement data for a candidate cell.

[0151] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine whether relaxed measurement criteria for low mobility are met based on at least one reference measurement of a cell and at least one current measurement of the cell; and perform selective Layer 1 (L1) measurements for the cell based on meeting the relaxed measurement criteria for low mobility, the L1 measurements being associated with transitioning the device from communicating with the cell to communicating with a candidate cell.

[0152] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: one or more components for determining whether relaxed measurement criteria for low mobility are satisfied based on at least one reference measurement of a cell and at least one current measurement of the cell; and components for performing selective Layer 1 (L1) measurements for the cell based on satisfying the relaxed measurement criteria for low mobility, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0153] Figure 13B is a flow chart illustrating an example of a process 1310 for performing wireless communications according to some examples disclosed herein. The operations of process 1310 may be implemented as a process on one or more processors (e.g., Figure 15 Process 1310 may be performed by any device or group of devices. The operations of process 1310 may be implemented as software components that execute and run on one or more processors (e.g., Figure 15 software components executed and run on the processor 1510 and / or other processors).

[0154] At block 1312, process 1310 includes determining (e.g., via the UE or via computing device 1500) whether relaxed measurement criteria for good cell quality conditions are met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter. Any one or more of these conditions may be met in the determining step.

[0155] At block 1314 , process 1310 includes performing selective Layer 1 (L1) measurements for the cell based on satisfying the relaxed measurement criteria for the good cell quality condition, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0156] In some aspects, the techniques described herein relate to a method or process 1310 wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

[0157] In some aspects, the technology described herein relates to a method or process 1310 in which determining that the relaxed measurement criteria for the good cell quality condition are met includes determining that the cell metric of the cell is greater than the sum of the threshold associated with the downlink radio link quality and the offset parameter.

[0158] In some aspects, the techniques described herein relate to a method or process 1310 in which the threshold is configured by a network entity.

[0159] In some aspects, the techniques described herein relate to a method or process 1310 in which the threshold is fixed.

[0160] In some aspects, the techniques described herein relate to a method or process 1310 in which the cell metrics include synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurements of the cell.

[0161] In some aspects, the techniques described herein relate to a method or process 1310 in which the cell metrics include synchronization signal block (SSB)-based reference layer 3 (L3) reference signal received power (RSRP) measurements of the cell.

[0162] In some aspects, the techniques described herein relate to a method or process 1310 in which the UE is configured to receive layer 1 measurement data for a candidate cell.

[0163] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for a good cell quality condition are satisfied based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and based on satisfying the relaxed measurement criteria for the good cell quality condition, perform a selective Layer 1 (L1) measurement for the cell, the L1 measurement associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell.

[0164] In some aspects, the techniques described herein relate to an apparatus wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing a frequency of the L1 measurement for the cell.

[0165] In some aspects, the technology described herein relates to an apparatus wherein, to determine that the relaxed measurement criteria for the good cell quality condition are satisfied, the at least one processor is configured to: determine that the cell metric of the cell is greater than the sum of the threshold value associated with the downlink radio link quality and the offset parameter.

[0166] In some aspects, the techniques described herein relate to an apparatus wherein the threshold is configured by a network entity.

[0167] In some aspects, the techniques described herein relate to an apparatus wherein the threshold is fixed.

[0168] In some aspects, the techniques described herein relate to an apparatus wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell.

[0169] In some aspects, the techniques described herein relate to an apparatus wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell.

[0170] In some aspects, the techniques described herein relate to an apparatus configured to receive layer 1 measurement data for a candidate cell.

[0171] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine whether relaxed measurement criteria for a good cell quality condition are met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and perform selective Layer 1 (L1) measurements for the cell based on meeting the relaxed measurement criteria for the good cell quality condition, the L1 measurements being associated with transitioning the device from communicating with the cell to communicating with a candidate cell.

[0172] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: one or more components for determining whether relaxed measurement criteria for a good cell quality condition are satisfied based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and components for performing selective Layer 1 (L1) measurements for the cell based on satisfying the relaxed measurement criteria for the good cell quality condition, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0173] Figure 13Cis a flow chart illustrating an example of a process 1320 for performing wireless communications according to some examples disclosed herein. The operations of process 1320 may be implemented as a process on one or more processors (e.g., Figure 15 Process 1320 may be performed by any device or group of devices. The operations of process 1320 may be implemented as software components executed and run on one or more processors (e.g., Figure 15 software components executed and run on the processor 1510 and / or other processors).

[0174] At block 1322 , process 1320 includes determining (eg, via the UE or via computing device 1500 ) whether relaxed measurement criteria for poor candidate cell conditions are met based on comparing a threshold to at least one of a cell metric of the candidate cell or a cell metric of the serving cell.

[0175] At box 1324, the process 1320 includes: based on satisfying the relaxed measurement criteria for the poor candidate cell condition, performing selective layer 1 (L1) measurement for at least one of the serving cell or the candidate cell, the L1 measurement associated with transitioning the UE from communicating with the serving cell to communicating with at least one candidate cell.

[0176] In some aspects, the technology described herein relates to a method or process 1320 in which the selective L1 measurement includes one of: suspending L1 measurement for at least one of the serving cell or the candidate cell, or reducing the frequency of the L1 measurement for at least one of the serving cell or the candidate cell.

[0177] In some aspects, the technology described herein relates to a method or process 1320 in which determining that the relaxed measurement criteria for the poor candidate cell condition is met includes determining that the cell metric of the serving cell differs from the cell metric of the serving cell by less than a threshold.

[0178] In some aspects, the techniques described herein relate to a method or process 1320 in which determining that the relaxed measurement criteria for the poor candidate cell condition are met includes determining that the cell metric of the candidate cell is less than the threshold.

[0179] In some aspects, the technology described herein relates to a method or process 1320, wherein the cell metric of the candidate cell includes a current layer 1 (L1) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 1 RSRP measurement of the serving cell based on a second SSB.

[0180] In some aspects, the technology described herein relates to a method or process 1320, wherein the cell metric of the candidate cell includes a current layer 3 (L3) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 3 RSRP measurement of the serving cell based on a second SSB.

[0181] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor, coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for a poor candidate cell condition are satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and based on satisfying the relaxed measurement criteria for the poor candidate cell condition, perform selective Layer 1 (L1) measurements for at least one of the serving cell or the candidate cell, the L1 measurements associated with transitioning the apparatus from communicating with the serving cell to communicating with at least one candidate cell.

[0182] In some aspects, the techniques described herein relate to an apparatus wherein the selective L1 measurement comprises one of suspending L1 measurement for at least one of the serving cell or the candidate cell, or reducing the frequency of the L1 measurement for at least one of the serving cell or the candidate cell.

[0183] In some aspects, the technology described herein relates to an apparatus wherein, to determine that the relaxed measurement criteria for the poor candidate cell condition are satisfied, the at least one processor is configured to determine that a difference between the cell metric of the serving cell and the cell metric of the serving cell is less than a threshold.

[0184] In some aspects, the techniques described herein relate to an apparatus wherein, to determine that the relaxed measurement criteria for the poor candidate cell condition are satisfied, the at least one processor is configured to determine that the cell metric of the candidate cell is less than the threshold.

[0185] In some aspects, the technology described herein relates to an apparatus wherein the cell metric of the candidate cell includes a current layer 1 (L1) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 1 RSRP measurement of the serving cell based on a second SSB.

[0186] In some aspects, the technology described herein relates to an apparatus wherein the cell metric of the candidate cell comprises a current layer 3 (L3) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell comprises a current layer 3 RSRP measurement of the serving cell based on a second SSB.

[0187] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine whether relaxed measurement criteria for a poor candidate cell condition are satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and perform selective Layer 1 (L1) measurements of at least one of the serving cell or the candidate cell based on satisfying the relaxed measurement criteria for the poor candidate cell condition, the L1 measurements being associated with transitioning the device from communicating with the serving cell to communicating with at least one candidate cell.

[0188] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: one or more components for determining whether relaxed measurement criteria for a poor candidate cell condition are satisfied based on comparing a threshold to at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and components for performing selective Layer 1 (L1) measurements of at least one of the serving cell or the candidate cell based on satisfying the relaxed measurement criteria for the poor candidate cell condition, the L1 measurements associated with transitioning the UE from communicating with the serving cell to communicating with at least one candidate cell.

[0189] Figure 14 is a flow chart illustrating an example of a process 1400 for performing wireless communications according to some examples disclosed herein. The operations of process 1400 may be implemented as a process on one or more processors (e.g., Figure 15 Process 1400 may be performed by any device or group of devices. The operations of process 1400 may be implemented as software components executed and run on one or more processors (e.g., Figure 15 software components executed and run on the processor 1510 and / or other processors).

[0190] At block 1402 , process 1400 includes determining (eg, via a UE or via computing device 1500 ) one or more cells to trigger evaluation.

[0191] At block 1404 , process 1400 includes determining a cell metric type associated with the triggered evaluation.

[0192] At block 1406 , process 1400 includes determining whether a triggering condition exists based on the cell metric type.

[0193] At block 1408 , process 1400 includes performing selective layer 1 (L1) measurements based on determining that the trigger condition exists.

[0194] In some aspects, the techniques described herein relate to a method or process 1400 in which the selective L1 measurement includes one of suspending L1 measurement based on satisfying relaxed measurement criteria for low mobility or reducing the frequency of L1 measurement based on satisfying the relaxed measurement criteria.

[0195] In some aspects, the techniques described herein relate to a method or process 1400 in which determining one or more cells in the trigger evaluation further comprises determining a plurality of cells used in the trigger evaluation.

[0196] In some aspects, the techniques described herein relate to a method or process 1400 in which determining one or more cells in the trigger evaluation is based on fixed rules for a serving cell or a candidate cell.

[0197] In some aspects, the techniques described herein relate to a method or process 1400 in which determining the one or more cells in the trigger evaluation is based on a network entity configuring a serving cell or a candidate cell.

[0198] In some aspects, the techniques described herein relate to a method or process 1400 in which determining the one or more cells in the trigger evaluation is based on any or all of the serving cells or candidate cells, including or excluding a primary serving cell (PCell).

[0199] In some aspects, the technology described herein relates to a method or process 1400, wherein the cell metric type includes one or more of the following: (1) a cell-level metric; (2) layer 3 (L3) cell quality; (3) L3 SS-RSRP (synchronization signal-reference signal received power); (4) L3 SS-SINR (synchronization signal-signal interference and noise ratio); (5) L1 cell quality; (6) L1-SINR; (7) L1-RSRP; (8) cell average; (9) the top X beam / reference signals (RS) in the cell; (10) all or at least one RS; (11) beam failure detection RS in the cell; (12) multiple transmit / receive point (mTRP); (13) an mTRP in which two transmit configuration indicators (TCIs) are indicated, including a quasi-co-located (QLC) RS of the two TCIs or at least one indicated TCI.

[0200] In some aspects, the techniques described herein relate to a method or process 1400 wherein the triggering condition includes one or more of: a low mobility condition, a serving cell too good condition, a serving cell too good plus a candidate cell too bad condition.

[0201] In some aspects, the technology described herein relates to a method or process 1400, wherein the low mobility condition includes a scenario in which one or more serving cells / candidate cells are in low mobility, and the serving cell too good condition includes a scenario in which the serving cell is too good plus one or more serving cells / candidate cells are too good.

[0202] In some aspects, the technology described herein relates to a method or process 1400, wherein the serving cell is too good plus the candidate cell is too bad condition includes one of the following: a scenario in which the serving cell is too good plus all candidate cells are too bad, or a scenario in which the serving cell is too good plus an individual cell is too bad.

[0203] In some aspects, the technology described herein relates to a method or process 1400, wherein the selective L1 measurement includes one or more of the following: (1) skipping L1 measurement; (2) reducing the L1 measurement frequency; (3) skipping the L1 measurement for a single cell that meets the trigger condition or reducing the L1 measurement frequency for it; (4) when a single cell meets the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for it; (5) when all cells meet the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for them.

[0204] In some aspects, the technology described herein relates to an apparatus for performing wireless communications, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine one or more cells in a trigger evaluation; determine a cell metric type associated with the trigger evaluation; determine whether a trigger condition exists based on the cell metric type; and perform selective layer 1 (L1) measurements based on determining the existence of the trigger condition.

[0205] In some aspects, the techniques described herein relate to an apparatus wherein the selective L1 measurement comprises one of suspending L1 measurement based on satisfying relaxed measurement criteria for low mobility or reducing the frequency of L1 measurement based on satisfying the relaxed measurement criteria.

[0206] In some aspects, the techniques described herein relate to an apparatus wherein determining one or more cells in the trigger evaluation further comprises determining a plurality of cells used in the trigger evaluation.

[0207] In some aspects, the techniques described herein relate to an apparatus in which determining the one or more cells in the trigger evaluation is based on fixed rules for a serving cell or a candidate cell.

[0208] In some aspects, the techniques described herein relate to an apparatus in which determining the one or more cells in the trigger evaluation is based on a network entity configuring a serving cell or a candidate cell.

[0209] In some aspects, the techniques described herein relate to an apparatus wherein determining the one or more cells in the trigger evaluation is based on any or all of the serving cells or candidate cells, including or excluding a primary serving cell (PCell).

[0210] In some aspects, the technology described herein relates to an apparatus, wherein the cell metric type includes one or more of the following: (1) a cell-level-related metric; (2) layer 3 (L3) cell quality; (3) L3 SS-RSRP (synchronization signal-reference signal received power); (4) L3 SS-SINR (synchronization signal-signal to interference and noise ratio); (5) L1 cell quality; (6) L1-SINR; (7) L1-RSRP; (8) cell average; (9) the top X beam / reference signals (RS) in the cell; (10) all or at least one RS; (11) a beam failure detection RS in the cell; (12) multiple transmit / receive points (mTRP); (13) an mTRP in which two transmit configuration indicators (TCIs) are indicated, including a quasi-co-located (QLC) RS of the two TCIs or at least one indicated TCI.

[0211] In some aspects, the techniques described herein relate to an apparatus wherein the triggering condition comprises one or more of: a low mobility condition, a serving cell too good condition, a serving cell too good plus a candidate cell too bad condition.

[0212] In some aspects, the techniques described herein relate to an apparatus wherein the low mobility condition includes a scenario in which one or more serving cells / candidate cells are in low mobility, and the serving cell-too-good condition includes a scenario in which the serving cell is too good plus one or more serving cells / candidate cells are too good.

[0213] In some aspects, the technology described herein relates to an apparatus wherein the serving cell is too good plus the candidate cell is too bad condition comprises one of: a scenario wherein the serving cell is too good plus all candidate cells are too bad, or a scenario wherein the serving cell is too good plus an individual cell is too bad.

[0214] In some aspects, the technology described herein relates to an apparatus, wherein the selective L1 measurement comprises one or more of the following: (1) skipping L1 measurement; (2) reducing the L1 measurement frequency; (3) skipping the L1 measurement for a single cell that meets the trigger condition or reducing the L1 measurement frequency for it; (4) skipping the L1 measurement for all cells or reducing the L1 measurement frequency for it when a single cell meets the trigger condition; (5) skipping the L1 measurement for all cells or reducing the L1 measurement frequency for them when all cells meet the trigger condition.

[0215] In some aspects, the technology described herein relates to a non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, configure the one or more processors to: determine one or more cells in a trigger evaluation; determine a cell metric type associated with the trigger evaluation; determine whether a trigger condition exists based on the cell metric type; and perform selective layer 1 (L1) measurements based on determining the existence of the trigger condition.

[0216] In some aspects, the technology described herein relates to an apparatus for wireless communication, the apparatus comprising: one or more components for determining one or more cells in a trigger evaluation; components for determining a cell metric type associated with the trigger evaluation; components for determining whether a trigger condition exists based on the cell metric type; and components for performing selective layer 1 (L1) measurements based on determining the presence of the trigger condition.

[0217] In some examples, the processes described herein may be performed by a computing device or apparatus (e.g., a UE, a network entity, etc.). In one example, the processes described herein may be performed by a computing device or apparatus (e.g., a UE, a network entity, etc.). Figure 4 In another example, the process described herein may be performed by a wireless communication device having a UE 407, a mobile device and / or other UE or device. Figure 15 For example, a computing device having the computing system 1500 shown in FIG. Figure 15 The computing architecture of the wireless communication device shown (eg, Figure 4 UE 407 and / or other UEs or devices) may include components of a UE and may implement the operations of the processes described herein.

[0218] In some cases, a computing device or apparatus may include various components, such as one or more input devices, one or more output devices, one or more processors, one or more microprocessors, one or more microcomputers, one or more cameras, one or more sensors, and / or other components configured to perform the steps of the processes described herein. In some examples, a computing device may include a display, one or more network interfaces configured to communicate and / or receive data, any combination thereof, and / or other components. The one or more network interfaces may be configured to communicate and / or receive wired and / or wireless data, including data according to 3G, 4G, 5G, and / or other cellular standards, data according to WiFi (802.11x), data according to Bluetooth, and / or other standards. TM Standard data, data according to the Internet Protocol (IP) standard and / or other types of data.

[0219] Components of a computing device may be implemented in circuitry. For example, a component may include and / or be implemented using electronic circuitry or other electronic hardware, which may include one or more programmable electronic circuits (e.g., a microprocessor, a graphics processing unit (GPU), a digital signal processor (DSP), a central processing unit (CPU), and / or other suitable electronic circuitry), and / or may include and / or be implemented using computer software, firmware, or any combination thereof for performing the various operations described herein.

[0220] The processes described herein may be described or illustrated as a logic flow diagram, the operations of which represent a sequence of operations that can be implemented by hardware, computer instructions, or a combination thereof. In the context of computer instructions, each operation represents a computer-executable instruction stored on one or more computer-readable storage media that, when executed by one or more processors, performs the described operations. Generally speaking, computer-executable instructions include routines, programs, objects, components, data structures, etc. that perform a specific function or implement a specific data type. The order in which the operations are described is not intended to be construed as a limitation, and any number of the described operations may be combined in any order and / or in parallel to implement the process.

[0221] Additionally, the processes described herein may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) that executes together on one or more processors, implemented in hardware, or a combination thereof. As noted above, the code may be stored on a computer-readable or machine-readable storage medium, for example, in the form of a computer program comprising a plurality of instructions that can be executed by one or more processors. The computer-readable or machine-readable storage medium may be non-transitory.

[0222] Figure 15 is a diagram illustrating an example of a system for implementing certain aspects of the present technology. Specifically, Figure 15 An example of a computing system 1500 is illustrated, which can be any computing device, for example, constituting an internal computing system, a remote computing system, a camera, or any component thereof, wherein the components of the system communicate with each other using connection 1505. Connection 1505 can be a physical connection using a bus, or a direct connection to processor 1510, such as in a chipset architecture. Connection 1505 can also be a virtual connection, a networked connection, or a logical connection.

[0223] In some aspects, computing system 1500 is a distributed system in which the functionality described herein may be distributed within a data center, multiple data centers, a peer-to-peer network, etc. In some aspects, one or more of the described system components represent a plurality of such components that each perform some or all of the functionality for which the component is described. In some aspects, a component may be a physical or virtual device.

[0224] Example system 1500 includes at least one processing unit (CPU or processor) 1510 and connections 1505 that communicatively couple various system components, including system memory 1515, such as read-only memory (ROM) 1520 and random access memory (RAM) 1525, to processor 1510. Computing system 1500 may include a cache 1512 of high-speed memory directly connected to, in close proximity to, or integrated as part of processor 1510.

[0225] Processor 1510 may include any general-purpose processor and hardware or software services (such as services 1532, 1534, and 1536 configured to control processor 1510, stored in storage device 1530), as well as a dedicated processor in which software instructions are incorporated into the actual processor design. Processor 1510 may essentially be a completely independent computing system containing multiple cores or processors, buses, memory controllers, caches, etc. Multi-core processors may be symmetric or asymmetric.

[0226] To enable user interaction, the computing system 1500 includes an input device 1545 that can represent any number of input mechanisms, such as a microphone for voice, a touch-sensitive screen for gesture or graphical input, a keyboard, a mouse, motion input, voice, etc. The computing system 1500 can also include an output device 1535 that can be one or more of a plurality of output mechanisms. In some examples, a multimodal system can enable a user to provide multiple types of input / output to communicate with the computing system 1500.

[0227] The computing system 1500 may include a communication interface 1540, which generally governs and manages user input and system output. The communication interface may perform or facilitate receiving and / or sending wired or wireless communications using wired and / or wireless transceivers, including using audio jacks / plugs, microphone jacks / plugs, Universal Serial Bus (USB) ports / plugs, Apple TM Lightning TM Ports / plugs, Ethernet ports / plugs, fiber optic ports / plugs, dedicated wired ports / plugs, 3G, 4G, 5G and / or other cellular data network wireless signal transmission, Bluetooth TM Wireless signal transmission, Bluetooth TM Low energy (BLE) wireless signal transmission, IBEACON TMThe communication interface 1540 may also include one or more global navigation satellite system (GNSS) receivers or transceivers for determining the location of the computing system 1500 based on receiving one or more signals from one or more satellites associated with one or more GNSS systems. GNSS systems include, but are not limited to, the United States' Global Positioning System (GPS), Russia's Global Navigation Satellite System (GLONASS), China's BeiDou Navigation Satellite System (BDS), and Europe's Galileo GNSS. There is no restriction on operating on any particular hardware arrangement, and thus the base features herein may be readily substituted for improved hardware or firmware arrangements as they are developed.

[0228] The storage device 1530 may be a non-volatile and / or non-transitory and / or computer-readable memory device and may be a hard disk or other type of computer-readable medium that can store data that can be accessed by a computer, such as a magnetic cassette, a flash memory card, a solid-state memory device, a digital versatile disk, a cassette, a floppy disk, a floppy disk, a hard disk, a magnetic tape, a magnetic stripe / magnetic stripe, any other magnetic storage medium, flash memory, a memristor memory, any other solid-state memory, a compact disc read-only memory (CD-ROM) disc, a rewritable compact disc (CD) disc, a digital video disc (DVD) disc, a Blu-ray disc (BDD) disc, a holographic disc, another optical medium, a secure digital (SD) card, a micro secure digital (microSD) card, a memory card, a smart card chip, an EMV chip, a subscriber identity module (SIM) card, a mini / micro / nano / pico SIM card, another integrated circuit (IC) chip / card, a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a flash EPROM (FLASH EPROM), a cache memory (e.g., a level 1 (L1) cache, a level 2 (L2) cache, a level 3 (L3) cache, a level 4 (L4) cache, a level 5 (L5) cache, other (L#) cache), a resistive random access memory (RRAM / ReRAM), a phase change memory (PCM), a spin transfer torque RAM (STT-RAM), another memory chip or cartridge, and / or a combination thereof.

[0229] Storage device 1530 may include software services, servers, services, etc., which, when the code defining such software is executed by processor 1510, causes the system to perform a function. In some aspects, hardware services that perform a particular function may include software components stored in a computer-readable medium connected to the necessary hardware components (such as processor 1510, connection 1505, output device 1535, etc.) to perform the function. The term "computer-readable medium" includes, but is not limited to, portable or non-portable storage devices, optical storage devices, and various other media capable of storing, containing, or carrying instructions and / or data. Computer-readable media may include non-transitory media in which data may be stored and does not include carrier waves and / or transient electronic signals propagated wirelessly or via a wired connection. Examples of non-transitory media may include, but are not limited to, disks or tapes, optical storage media (such as compact discs (CDs) or digital versatile discs (DVDs)), flash memory, memory, or memory devices. Computer-readable media may store thereon code and / or machine-executable instructions that may represent a process, function, subroutine, program, routine, subroutine, module, software package, class, or any combination of instructions, data structures, or program statements. A code segment may be coupled to another code segment or a hardware circuit by passing and / or receiving information, data, independent variables, parameters, or memory contents. Information, independent variables, parameters, data, etc. may be transferred, forwarded, or sent via any suitable means, including memory sharing, message passing, token passing, or network sending, etc.

[0230] Specific details are provided in the description above to provide a thorough understanding of the various aspects and examples provided herein, but those skilled in the art will recognize that the application is not limited thereto. Thus, although the illustrative aspects of the present application have been described in detail herein, it is to be understood that each inventive concept can be implemented and adopted in various other ways, and the appended claims are not intended to be interpreted as including these variations, unless limited by the prior art. The various features and aspects of the application described above can be used individually or in combination. In addition, without departing from the broader scope of the specification, the various aspects can be utilized in any number of environments and applications beyond those described herein. Therefore, the description and the accompanying drawings should be considered as illustrative rather than restrictive. For illustrative purposes, each method is described in a specific order. It should be understood that, in alternative aspects, each method can be performed in a different order than described.

[0231] For clarity of explanation, in some instances, the present technology may be presented as including separate functional blocks, which include devices, device components, steps or routines in the method embodied in software or a combination of hardware and software. Additional components other than those shown in the drawings and / or described herein may be used. For example, circuits, systems, networks, processes and other components may be shown as components in block diagram form to avoid confusing these aspects in unnecessary details. In other instances, well-known circuits, processes, algorithms, structures and techniques may be shown without unnecessary details to avoid confusing various aspects.

[0232] In addition, it will be understood by those skilled in the art that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the various aspects disclosed herein can be implemented as electronic hardware, computer software, or a combination of the two. In order to clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. Technicians can implement the described functionality in different ways for each specific application, but such specific implementation decisions should not be interpreted as resulting in a departure from the scope of this disclosure.

[0233] Various aspects may be described above as processes or methods, which may be depicted as flow charts, flowcharts, data flow diagrams, structure diagrams, or block diagrams. Although a flow chart may describe operations as a sequential process, many of the operations may be performed in parallel or concurrently. Furthermore, the order of the operations may be rearranged. A process is terminated when its operations are completed, but a process may have additional steps not included in the accompanying figures. A process may correspond to a method, function, procedure, subroutine, subprogram, etc. When a process corresponds to a function, termination of the process may correspond to the function returning to the calling function or main function.

[0234] The processes and methods according to the examples described above can be implemented using stored computer-executable instructions or computer-executable instructions otherwise available from a computer-readable medium. Such instructions may include, for example, instructions and data that cause or otherwise configure a general-purpose computer, a special-purpose computer, or a processing device to perform a certain function or group of functions. Portions of the computer resources used may be accessible via a network. The computer-executable instructions may be, for example, binary, intermediate format instructions such as assembly language, firmware, source code. Examples of computer-readable media that can be used to store instructions, information used, and / or information created during the methods according to the described examples include magnetic or optical disks, flash memory, USB devices with non-volatile memory, networked storage devices, and the like.

[0235] In some aspects, computer-readable storage devices, media, and memories may include wired or wireless signals containing bit streams, etc. However, when referred to, non-transitory computer-readable storage media specifically excludes media such as power consumption, carrier signals, electromagnetic waves, and signals themselves.

[0236] Those skilled in the art will understand that information and signals can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description may, in some cases, be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof, depending in part on the specific application, in part on the desired design, in part on the corresponding technology, etc.

[0237] The various illustrative logic blocks, modules, and circuits described in conjunction with the various aspects disclosed herein may be implemented or executed using hardware, software, firmware, middleware, microcode, hardware description languages, or any combination thereof, and may take any of a variety of form factors. When implemented in software, firmware, middleware, or microcode, program code or code segments (e.g., a computer program product) for performing the necessary tasks may be stored in a computer-readable or machine-readable medium. A processor may perform the necessary tasks. Examples of form factors include: a laptop computer, a smartphone, a mobile phone, a tablet device, or other small form factor personal computer, a personal digital assistant, a rack-mounted device, a stand-alone device, and the like. The functionality described herein may also be embodied in a peripheral device or add-in card. By way of further example, such functionality may also be implemented on circuit boards in different chips or different processes executed on a single device.

[0238] Instructions, media for conveying such instructions, computing resources for executing them, and other structures for supporting such computing resources are example means for providing the functionality described in this disclosure.

[0239] The techniques described herein may also be implemented in electronic hardware, computer software, firmware, or any combination thereof. Such techniques may be implemented in any of a variety of devices, such as general-purpose computers, wireless communication devices, or integrated circuit devices with multiple uses, including applications in wireless communication devices and other devices. Any features described as modules or components may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices. If implemented in software, the techniques may be implemented at least in part by a computer-readable data storage medium comprising program code, which includes instructions that, when executed, perform one or more of the methods, algorithms, and / or operations described above. The computer-readable data storage medium may form part of a computer program product, which may include packaging materials. The computer-readable medium may include memory or data storage media, such as random access memory (RAM) (such as synchronous dynamic random access memory (SDRAM)), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), flash memory, and magnetic or optical data storage media. Additionally or alternatively, the techniques may be implemented at least in part by a computer-readable communication medium that carries or communicates program code in the form of instructions or data structures and that can be accessed, read, and / or executed by a computer, such as a propagated signal or wave.

[0240] The program code may be executed by a processor, which may include one or more processors, such as one or more digital signal processors (DSPs), general-purpose microprocessors, application-specific integrated circuits (ASICs), field-programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Such processors may be configured to perform any of the techniques described in this disclosure. A general-purpose processor may be a microprocessor; however, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration. Therefore, the term "processor" as used herein may refer to any of the foregoing structures, any combination of the foregoing structures, or any other structure or device suitable for implementing the techniques described herein.

[0241] One of ordinary skill in the art will appreciate that the less than ("<") and greater than (">") symbols or terms used herein may be replaced by less than or equal to ("≤") and greater than or equal to ("≥") symbols, respectively, without departing from the scope of the description.

[0242] Where a component is described as being “configured to” perform certain operations, such configuration may be achieved, for example, by designing electronic circuits or other hardware to perform the operations, by programming programmable electronic circuits (e.g., a microprocessor or other suitable electronic circuits) to perform the operations, or any combination thereof.

[0243] The phrases “coupled to” or “communicatively coupled to” refer to any component being physically connected directly or indirectly to another component, and / or any component being in communication, directly or indirectly, with another component (e.g., connected to the other component via a wired or wireless connection and / or other suitable communication interface).

[0244] Claim language or other language reciting "at least one of" a set and / or "one or more" of a set indicates that one member of the set or multiple members of the set (in any combination) satisfies the claim. For example, claim language reciting "at least one of A and B" or "at least one of A or B" means A, B, or A and B. In another example, claim language reciting "at least one of A, B, and C" or "at least one of A, B, or C" means A, B, C, or A and B, or A and C, or B and C, or any repetition is information or data (e.g., A and A, B and B, C and C, A and A and B, etc.), or any other ordering, repetition, or combination of A, B, and C. The language "at least one of" a set and / or "one or more" of a set does not limit the set to the items listed in the set. For example, claim language stating "at least one of A and B" or "at least one of A or B" may mean A, B, or A and B, and may additionally include items not listed in the set of A and B.

[0245] Illustrative aspects of the present disclosure include: Aspect 1. A method of wireless communication performed by a user equipment (UE), the method comprising: determining whether a relaxed measurement criterion for low mobility is met based on at least one reference measurement of a cell and at least one current measurement of the cell; and performing a selective layer 1 (L1) measurement for the cell based on meeting the relaxed measurement criterion for low mobility, the L1 measurement being associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0246] Aspect 2. The method according to aspect 1, wherein the selective L1 measurement comprises one of the following: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

[0247] Aspect 3. The method according to any one of aspects 1 or 2, wherein determining the relaxed measurement criterion comprises comparing a difference between the at least one current measurement and the at least one reference measurement with a threshold.

[0248] Aspect 4. A method according to any one of Aspects 1 to 3, wherein the at least one reference measurement includes a reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell based on a synchronization signal block (SSB), and wherein the at least one current measurement includes a current L1 RSRP measurement of the cell based on an SSB.

[0249] Aspect 5. A method according to any one of Aspects 1 to 3, wherein the at least one reference measurement includes a reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell based on a first synchronization signal block (SSB), and wherein the at least one current measurement includes a current L3 RSRP measurement of the cell based on a second SSB.

[0250] Aspect 6. According to any one of aspects 3 to 5, the method further includes: determining the at least one reference measurement based on at least one of the following: receiving a low mobility criterion configuration, the difference between the at least one reference measurement and the at least one current measurement is greater than 0, or the relaxed measurement criterion is not met within a time period.

[0251] Aspect 7. A method according to any one of Aspects 1 to 6, wherein the current measurement for the cell is set as a reference measurement for the cell for the relaxed measurement criterion based on at least one of the following items: determining the relaxed measurement criterion, the difference between the reference measurement and the current measurement is greater than 0, or the relaxed measurement criterion is not met within a period of time.

[0252] Aspect 8. The method according to any one of aspects 1 to 7, wherein the cell comprises one of a source cell, an active cell, a serving cell, a target cell, a non-serving cell, or the candidate cell.

[0253] Aspect 9. The method according to any one of aspects 1 to 8, wherein the UE is configured to receive layer 1 measurement data for the candidate cell.

[0254] Aspect 10. An apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor, the at least one processor being coupled to the at least one memory and configured to: determine whether a relaxed measurement criterion for low mobility is met based on at least one reference measurement of a cell and at least one current measurement of the cell; and based on meeting the relaxed measurement criterion for low mobility, perform a selective layer 1 (L1) measurement for the cell, the L1 measurement being associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell.

[0255] Aspect 11. The apparatus according to aspect 10, wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

[0256] Aspect 12. The apparatus according to any one of aspects 10 or 11, wherein, in order to determine the relaxed measurement criterion, the at least one processor is configured to compare a difference between the at least one current measurement and the at least one reference measurement with a threshold.

[0257] Aspect 13. An apparatus according to any one of aspects 10 to 12, wherein the at least one reference measurement includes a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell, and wherein the at least one current measurement includes an SSB-based current L1 RSRP measurement of the cell.

[0258] Aspect 14. An apparatus according to any one of Aspects 10 to 12, wherein the at least one reference measurement includes a reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell based on a first synchronization signal block (SSB), and wherein the at least one current measurement includes a current L3 RSRP measurement of the cell based on a second SSB.

[0259] Aspect 15. An apparatus according to any one of Aspects 12 to 14, wherein the at least one processor is configured to determine the at least one reference measurement based on at least one of the following: receiving a low mobility criterion configuration, the difference between the at least one reference measurement and the at least one current measurement is greater than 0, or the relaxed measurement criterion is not met within a time period.

[0260] Aspect 16. An apparatus according to any one of Aspects 10 to 15, wherein the at least one processor is configured to set the current measurement for the cell as a reference measurement for the cell for the relaxed measurement criterion based on at least one of the following: determining the relaxed measurement criterion, the difference between the reference measurement and the current measurement is greater than 0, or the relaxed measurement criterion is not met within a period of time.

[0261] Aspect 17. The apparatus according to any one of aspects 10 to 16, wherein the cell comprises one of a source cell, an active cell, a serving cell, a target cell, a non-serving cell, or the candidate cell.

[0262] Aspect 18. An apparatus according to any one of aspects 10 to 17, wherein the apparatus is configured to receive layer 1 measurement data for a candidate cell.

[0263] Aspect 19. A non-transitory computer-readable medium having instructions stored thereon, the instructions, when executed by one or more processors, causing the one or more processors to perform the operations according to any one of aspects 1 to 9.

[0264] Aspect 20. An apparatus for wireless communication, the apparatus comprising one or more means for performing the operations according to any one of aspects 1 to 9.

[0265] Aspect 21. A method of wireless communication performed by a user equipment (UE), the method comprising: determining whether a relaxed measurement criterion for a good cell quality condition is met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and performing selective Layer 1 (L1) measurement for the cell based on meeting the relaxed measurement criterion for the good cell quality condition, the L1 measurement being associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

[0266] Aspect 22. The method according to aspect 21, wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

[0267] Aspect 23. A method according to any one of Aspects 21 or 22, wherein determining that the relaxed measurement criteria for the good cell quality condition are met includes: determining that the cell metric of the cell is greater than the sum of the threshold associated with the downlink radio link quality and the offset parameter.

[0268] Aspect 24. The method according to any one of aspects 21 to 23, wherein the threshold is configured by a network entity.

[0269] Aspect 25. The method according to any one of aspects 21 to 23, wherein the threshold is fixed.

[0270] Aspect 26. A method according to any one of aspects 21 to 25, wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell.

[0271] Aspect 27. A method according to any one of aspects 21 to 25, wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell.

[0272] Aspect 28. The method according to any one of aspects 21 to 27, wherein the UE is configured to receive layer 1 measurement data for the candidate cell.

[0273] Aspect 29. An apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine whether relaxed measurement criteria for a good cell quality condition are met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; and based on meeting the relaxed measurement criteria for the good cell quality condition, perform selective layer 1 (L1) measurement for the cell, the L1 measurement being associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell.

[0274] Aspect 30. The apparatus according to aspect 29, wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

[0275] Aspect 31. An apparatus according to any one of Aspects 29 or 30, wherein, in order to determine that the relaxed measurement criteria for the good cell quality condition are satisfied, the at least one processor is configured to: determine that the cell metric of the cell is greater than the sum of the threshold associated with the downlink radio link quality and the offset parameter.

[0276] Aspect 32. The apparatus according to any one of aspects 29 to 31, wherein the threshold is configured by a network entity.

[0277] Aspect 33. An apparatus according to any one of aspects 29 to 31, wherein the threshold is fixed.

[0278] Aspect 34. An apparatus according to any one of aspects 29 to 33, wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell.

[0279] Aspect 35. An apparatus according to any one of aspects 29 to 33, wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell.

[0280] Aspect 36. An apparatus according to any one of aspects 29 to 35, wherein the apparatus is configured to receive layer 1 measurement data for a candidate cell.

[0281] Aspect 37. A non-transitory computer-readable medium having instructions stored thereon, the instructions, when executed by one or more processors, causing the one or more processors to perform the operations according to any one of aspects 21 to 28.

[0282] Aspect 38. An apparatus for performing wireless communications, the apparatus comprising one or more components for performing the operations of any one of aspects 21 to 28.

[0283] Aspect 39. A method of wireless communication performed by a user equipment (UE), the method comprising: determining whether a relaxed measurement criterion for a poor candidate cell condition is met based on comparing a threshold with at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and performing selective layer 1 (L1) measurement of at least one of the serving cell or the candidate cell based on meeting the relaxed measurement criterion for the poor candidate cell condition, the L1 measurement being associated with transitioning the UE from communicating with the serving cell to communicating with at least one candidate cell.

[0284] Aspect 40. The method according to aspect 39, wherein the selective L1 measurement comprises one of: suspending L1 measurement for at least one of the serving cell or the candidate cell, or reducing the frequency of the L1 measurement for at least one of the serving cell or the candidate cell.

[0285] Aspect 41. A method according to any one of aspects 39 or 40, wherein determining that the relaxed measurement criteria for the poor candidate cell condition are satisfied comprises determining that the cell metric of the serving cell and the cell metric of the serving cell differ by less than the threshold.

[0286] Aspect 42. The method according to any one of aspects 39 or 40, wherein determining that the relaxed measurement criteria for the poor candidate cell condition are satisfied comprises determining that the cell metric of the candidate cell is less than the threshold.

[0287] Aspect 43. A method according to any one of Aspects 39 to 42, wherein the cell metric of the candidate cell includes a current layer 1 (L1) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 1 RSRP measurement of the serving cell based on a second SSB.

[0288] Aspect 44. A method according to any one of Aspects 39 to 42, wherein the cell metric of the candidate cell includes a current layer 3 (L3) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 3 RSRP measurement of the serving cell based on a second SSB.

[0289] Aspect 45. An apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine whether a relaxed measurement criterion for a poor candidate cell condition is met based on comparing a threshold with at least one of a cell metric of a candidate cell or a cell metric of a serving cell; and perform selective layer 1 (L1) measurement for at least one of the serving cell or the candidate cell based on meeting the relaxed measurement criterion for the poor candidate cell condition, the L1 measurement being associated with transitioning the apparatus from communicating with the serving cell to communicating with at least one candidate cell.

[0290] Aspect 46. The apparatus according to aspect 45, wherein the selective L1 measurement comprises one of: suspending L1 measurement for at least one of the serving cell or the candidate cell, or reducing the frequency of the L1 measurement for at least one of the serving cell or the candidate cell.

[0291] Aspect 47. An apparatus according to any one of Aspects 45 or 46, wherein, in order to determine whether the relaxed measurement criteria for the poor candidate cell condition are satisfied, the at least one processor is configured to: determine that the difference between the cell metric of the serving cell and the cell metric of the serving cell is less than the threshold.

[0292] Aspect 48. An apparatus according to any one of Aspects 45 or 46, wherein, in order to determine that the relaxed measurement criteria for the poor candidate cell condition are satisfied, the at least one processor is configured to: determine that the cell metric of the candidate cell is less than the threshold.

[0293] Aspect 49. An apparatus according to any one of Aspects 45 to 48, wherein the cell metric of the candidate cell includes a current layer 1 (L1) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 1 RSRP measurement of the serving cell based on a second SSB.

[0294] Aspect 50. An apparatus according to any one of Aspects 45 to 48, wherein the cell metric of the candidate cell includes a current layer 3 (L3) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 3 RSRP measurement of the serving cell based on a second SSB.

[0295] Aspect 51. A non-transitory computer-readable medium having instructions stored thereon, the instructions, when executed by one or more processors, causing the one or more processors to perform the operations according to any one of aspects 39 to 44.

[0296] Aspect 52. An apparatus for wireless communication, the apparatus comprising one or more means for performing the operations of any one of aspects 39 to 44.

[0297] Aspect 53. A method for providing wireless communication performed by a user equipment (UE), the method comprising: determining one or more cells in a trigger evaluation; determining a cell measurement type associated with the trigger evaluation; determining whether a trigger condition exists based on the cell measurement type; and performing selective layer 1 (L1) measurement based on determining the existence of the trigger condition.

[0298] Aspect 54. The method according to aspect 53, wherein the selective L1 measurement comprises one of: suspending L1 measurement based on satisfying relaxed measurement criteria for low mobility, or reducing the frequency of L1 measurement based on satisfying the relaxed measurement criteria.

[0299] Aspect 55. The method according to aspect 53, wherein determining one or more cells in the trigger evaluation further comprises determining a plurality of cells used in the trigger evaluation.

[0300] Aspect 56. The method according to any one of aspects 53 to 55, wherein determining the one or more cells in the trigger evaluation is based on a fixed rule for a serving cell or a candidate cell.

[0301] Aspect 57. The method according to any one of aspects 53 to 55, wherein determining the one or more cells in the trigger evaluation is based on a network entity configuring a serving cell or a candidate cell.

[0302] Aspect 58. A method according to any one of Aspects 53 to 55, wherein determining the one or more cells in the trigger evaluation is based on any or all of the serving cells or candidate cells, including or excluding a primary serving cell (PCell).

[0303] Aspect 59. A method according to any one of aspects 53 to 58, wherein the cell metric type includes one or more of the following: (1) a cell-level-related metric; (2) layer 3 (L3) cell quality; (3) L3 SS-RSRP (synchronization signal-reference signal received power); (4) L3 SS-SINR (synchronization signal-signal interference and noise ratio); (5) L1 cell quality; (6) L1-SINR; (7) L1-RSRP; (8) cell average; (9) the top X beams / reference signals (RSs) in the cell; (10) all or at least one RS; (11) a beam failure detection RS in the cell; (12) multiple transmission / reception point (mTRP); (13) an mTRP in which two transmission configuration indicators (TCIs) are indicated, including a quasi-co-located (QLC) RS of the two TCIs or at least one indicated TCI.

[0304] Aspect 60. The method according to any one of aspects 53 to 59, wherein the triggering condition comprises one or more of the following: a low mobility condition, a serving cell too good condition, a serving cell too good plus a candidate cell too bad condition.

[0305] Aspect 61. A method according to aspect 60, wherein the low mobility condition includes a scenario in which one or more serving cells / candidate cells are in low mobility, and the serving cell too good condition includes a scenario in which the serving cell is too good plus one or more serving cells / candidate cells are too good.

[0306] Aspect 62. A method according to any one of Aspects 60 to 61, wherein the condition that the serving cell is too good plus the candidate cell is too poor includes one of the following: a scenario in which the serving cell is too good plus all candidate cells are too poor, or a scenario in which the serving cell is too good plus a single cell is too poor.

[0307] Aspect 63. A method according to any one of Aspects 53 to 62, wherein the selective L1 measurement includes one or more of the following: (1) skipping L1 measurement; (2) reducing the L1 measurement frequency; (3) skipping the L1 measurement for a single cell that meets the trigger condition or reducing the L1 measurement frequency for it; (4) when a single cell meets the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for it; (5) when all cells meet the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for them.

[0308] Aspect 64. An apparatus for performing wireless communications, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine one or more cells in a trigger evaluation; determine a cell metric type associated with the trigger evaluation; determine whether a trigger condition exists based on the cell metric type; and perform selective layer 1 (L1) measurements based on determining the existence of the trigger condition.

[0309] Aspect 65. The apparatus according to aspect 64, wherein the selective L1 measurement comprises one of: suspending L1 measurement based on satisfying relaxed measurement criteria for low mobility, or reducing the frequency of L1 measurement based on satisfying the relaxed measurement criteria.

[0310] Aspect 66. The apparatus of aspect 64, wherein determining one or more cells in the trigger evaluation further comprises determining a plurality of cells used in the trigger evaluation.

[0311] Aspect 67. An apparatus according to any one of aspects 64 to 66, wherein determining the one or more cells in the trigger evaluation is based on a fixed rule for a serving cell or a candidate cell.

[0312] Aspect 68. An apparatus according to any one of aspects 64 to 66, wherein determining the one or more cells in the trigger evaluation is based on a network entity configuring a serving cell or a candidate cell.

[0313] Aspect 69. An apparatus according to any one of Aspects 64 to 66, wherein determining the one or more cells in the trigger evaluation is based on any or all of the serving cells or candidate cells, including or excluding a primary serving cell (PCell).

[0314] Aspect 70. An apparatus according to any one of Aspects 64 to 69, wherein the cell metric type includes one or more of the following: (1) a cell-level-related metric; (2) Layer 3 (L3) cell quality; (3) L3 SS-RSRP (synchronization signal-reference signal received power); (4) L3 SS-SINR (synchronization signal-signal interference and noise ratio); (5) L1 cell quality; (6) L1-SINR; (7) L1-RSRP; (8) cell average; (9) the top X beams / reference signals (RSs) in the cell; (10) all or at least one RS; (11) a beam failure detection RS in the cell; (12) multiple transmission / reception point (mTRP); (13) an mTRP in which two transmission configuration indicators (TCIs) are indicated, including a quasi-co-located (QLC) RS of the two TCIs or at least one indicated TCI.

[0315] Aspect 71. An apparatus according to any one of aspects 64 to 70, wherein the triggering condition comprises one or more of the following: a low mobility condition, a serving cell too good condition, a serving cell too good plus a candidate cell too bad condition.

[0316] Aspect 72. An apparatus according to aspect 71, wherein the low mobility condition includes a scenario in which one or more serving cells / candidate cells are in low mobility, and the serving cell-too-good condition includes a scenario in which the serving cell is too good plus one or more serving cells / candidate cells are too good.

[0317] Aspect 73. An apparatus according to any one of Aspects 71 to 72, wherein the condition that the serving cell is too good plus the candidate cell is too poor includes one of the following: a scenario in which the serving cell is too good plus all candidate cells are too poor, or a scenario in which the serving cell is too good plus a single cell is too poor.

[0318] Aspect 74. An apparatus according to any one of Aspects 64 to 73, wherein the selective L1 measurement includes one or more of the following: (1) skipping L1 measurement; (2) reducing the L1 measurement frequency; (3) skipping the L1 measurement for a single cell that meets the trigger condition or reducing the L1 measurement frequency for it; (4) when a single cell meets the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for it; (5) when all cells meet the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for them.

[0319] Aspect 75. A non-transitory computer-readable medium having instructions stored thereon, the instructions, when executed by one or more processors, causing the one or more processors to perform the operations according to any one of aspects 53 to 63.

[0320] Aspect 76. An apparatus for wireless communications, the apparatus comprising one or more means for performing the operations of any one of aspects 53 to 63.

Claims

1. A method of wireless communication performed by a user equipment (UE), the method comprising: determining whether relaxed measurement criteria for low mobility are met based on at least one reference measurement of a cell and at least one current measurement of the cell; as well as Based on satisfying the relaxed measurement criteria for low mobility, selective Layer 1 (L1) measurements are performed for the cell, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell. 2 . The method according to claim 1 , wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell. 3 . The method according to claim 1 , wherein determining the relaxed measurement criterion comprises comparing a difference between the at least one current measurement and the at least one reference measurement with a threshold value.

4. The method according to any one of claims 1 to 3, wherein the at least one reference measurement comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell, and wherein the at least one current measurement comprises an SSB-based current L1 RSRP measurement of the cell.

5. The method according to any one of claims 1 to 3, wherein the at least one reference measurement comprises a reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell based on a first synchronization signal block (SSB), and wherein the at least one current measurement comprises a current L3 RSRP measurement of the cell based on a second SSB.

6. The method according to any one of claims 3 to 5, further comprising determining the at least one reference measurement based on at least one of the following: receiving a low mobility criterion configuration, a difference between the at least one reference measurement and the at least one current measurement being greater than 0, or not meeting the relaxed measurement criterion within a time period.

7. The method according to any one of claims 1 to 6, wherein the current measurement for the cell is set as the reference measurement for the cell for the relaxed measurement criterion based on at least one of the following: determining the relaxed measurement criterion, the difference between the reference measurement and the current measurement is greater than 0, or the relaxed measurement criterion is not met for a period of time.

8. The method according to any one of claims 1 to 7, wherein the cell comprises one of a source cell, an active cell, a serving cell, a target cell, a non-serving cell, or the candidate cell.

9. The method according to any one of claims 1 to 8, wherein the UE is configured to receive layer 1 measurement data for candidate cells.

10. An apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to at least one memory and configured to: determining whether relaxed measurement criteria for low mobility are met based on at least one reference measurement of a cell and at least one current measurement of the cell; as well as Based on satisfying the relaxed measurement criteria for low mobility, selective Layer 1 (L1) measurements are performed for the cell, the L1 measurements associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell. 11 . The apparatus according to claim 10 , wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

12. The device according to any one of claims 10 or 11, wherein To determine the relaxed measurement criterion, the at least one processor is configured to compare a difference between the at least one current measurement and the at least one reference measurement with a threshold value.

13. The apparatus of any one of claims 10 to 12, wherein the at least one reference measurement comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell, and wherein the at least one current measurement comprises an SSB-based current L1 RSRP measurement of the cell.

14. The apparatus of any one of claims 10 to 12, wherein the at least one reference measurement comprises a reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell based on a first synchronization signal block (SSB), and wherein the at least one current measurement comprises a current L3 RSRP measurement of the cell based on a second SSB.

15. The apparatus of any one of claims 12 to 14, wherein the at least one processor is configured to determine the at least one reference measurement based on at least one of: receiving a low mobility criteria configuration, a difference between the at least one reference measurement and the at least one current measurement being greater than 0, or not satisfying the relaxed measurement criteria within a time period.

16. The apparatus according to any one of claims 10 to 15, wherein the at least one processor is configured to set the current measurement for the cell as a reference measurement for the cell for the relaxed measurement criterion based on at least one of the following: determining the relaxed measurement criterion, a difference between the reference measurement and the current measurement being greater than 0, or not meeting the relaxed measurement criterion for a period of time.

17. The apparatus according to any one of claims 10 to 16, wherein the cell comprises one of a source cell, an active cell, a serving cell, a target cell, a non-serving cell, or the candidate cell.

18. The apparatus according to any one of claims 10 to 17, wherein the apparatus is configured to receive layer 1 measurement data for a candidate cell.

19. A non-transitory computer-readable medium having instructions stored thereon, which, when executed by one or more processors, cause the one or more processors to perform the operations of any one of claims 1 to 9.

20. An apparatus for wireless communication, the apparatus comprising one or more means for performing the operations of any one of claims 1 to 9.

21. A method of wireless communication performed by a user equipment (UE), the method comprising: determining whether relaxed measurement criteria for good cell quality conditions are met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; as well as Based on satisfying the relaxed measurement criteria for the good cell quality condition, selective Layer 1 (L1) measurements are performed for the cell, the L1 measurements associated with transitioning the UE from communicating with the cell to communicating with a candidate cell.

22. The method of claim 21, wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing the frequency of the L1 measurement for the cell.

23. The method according to any one of claims 21 or 22, wherein determining that the relaxed measurement criteria for the good cell quality condition are satisfied comprises: It is determined that the cell metric of the cell is greater than a sum of the threshold associated with the downlink radio link quality and the offset parameter.

24. The method according to any one of claims 21 to 23, wherein the threshold is configured by a network entity.

25. The method of any one of claims 21 to 23, wherein the threshold is fixed.

26. The method of any one of claims 21 to 25, wherein the cell metric comprises a synchronization signal block (SSB) based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell.

27. The method of any one of claims 21 to 25, wherein the cell metric comprises a synchronization signal block (SSB) based reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell.

28. The method according to any one of claims 21 to 27, wherein the UE is configured to receive layer 1 measurement data for a candidate cell.

29. An apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to at least one memory and configured to: determining whether relaxed measurement criteria for good cell quality conditions are met based on a cell metric of the cell, a threshold associated with downlink radio link quality, and an offset parameter; as well as Based on satisfying the relaxed measurement criteria for the good cell quality condition, selective Layer 1 (L1) measurements are performed for the cell, the L1 measurements associated with transitioning the apparatus from communicating with the cell to communicating with a candidate cell. 30 . The apparatus of claim 29 , wherein the selective L1 measurement comprises one of: suspending L1 measurement for the cell, or reducing a frequency of the L1 measurement for the cell.

31. The device according to any one of claims 29 or 30, wherein To determine that the relaxed measurement criteria for the good cell quality condition are met, the at least one processor is configured to: It is determined that the cell metric of the cell is greater than a sum of the threshold associated with the downlink radio link quality and the offset parameter.

32. The apparatus according to any one of claims 29 to 31, wherein the threshold is configured by a network entity.

33. The apparatus of any one of claims 29 to 31 , wherein the threshold is fixed.

34. The apparatus of any one of claims 29 to 33, wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 1 (L1) reference signal received power (RSRP) measurement of the cell.

35. The apparatus of any one of claims 29 to 33, wherein the cell metric comprises a synchronization signal block (SSB)-based reference layer 3 (L3) reference signal received power (RSRP) measurement of the cell.

36. An apparatus according to any one of claims 29 to 35, wherein the apparatus is configured to receive layer 1 measurement data for a candidate cell.

37. A non-transitory computer-readable medium having instructions stored thereon, which, when executed by one or more processors, cause the one or more processors to perform the operations of any one of claims 21 to 28.

38. An apparatus for generating a communication for performing wireless communications, the apparatus comprising one or more means for performing the operations of any one of claims 21 to 28.

39. A method of wireless communication performed by a user equipment (UE), the method comprising: determining whether relaxed measurement criteria for a poor candidate cell condition are met based on comparing a threshold to at least one of a cell metric of the candidate cell or a cell metric of the serving cell; as well as Based on satisfying the relaxed measurement criteria for the poor candidate cell condition, selective Layer 1 (L1) measurements are performed for at least one of the serving cell or the candidate cell, the L1 measurements being associated with transitioning the UE from communicating with the serving cell to communicating with at least one candidate cell.

40. The method of claim 39, wherein the selective L1 measurement comprises one of: suspending L1 measurement for at least one of the serving cell or the candidate cell, or reducing the frequency of the L1 measurement for at least one of the serving cell or the candidate cell.

41. The method according to any one of claims 39 or 40, wherein determining that the relaxed measurement criteria for the poor candidate cell condition is satisfied comprises: It is determined that a difference between the cell metric of the serving cell and the cell metric of the serving cell is smaller than the threshold.

42. The method according to any one of claims 39 or 40, wherein determining that the relaxed measurement criteria for the poor candidate cell condition is satisfied comprises: It is determined that the cell metric of the candidate cell is less than the threshold.

43. A method according to any one of claims 39 to 42, wherein the cell measurement of the candidate cell includes a current layer 1 (L1) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell measurement of the serving cell includes a current layer 1 RSRP measurement of the serving cell based on a second SSB.

44. A method according to any one of claims 39 to 42, wherein the cell measurement of the candidate cell includes a current layer 3 (L3) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell measurement of the serving cell includes a current layer 3 RSRP measurement of the serving cell based on a second SSB.

45. An apparatus for wireless communication, the apparatus comprising: at least one memory; and at least one processor coupled to at least one memory and configured to: determining whether relaxed measurement criteria for a poor candidate cell condition are met based on comparing a threshold to at least one of a cell metric of the candidate cell or a cell metric of the serving cell; as well as Based on satisfying the relaxed measurement criteria for the poor candidate cell condition, selective Layer 1 (L1) measurements are performed for at least one of the serving cell or the candidate cell, the L1 measurements being associated with transitioning the device from communicating with the serving cell to communicating with at least one candidate cell.

46. ​​The apparatus of claim 45, wherein the selective L1 measurement comprises one of: suspending L1 measurement for at least one of the serving cell or the candidate cell, or reducing the frequency of the L1 measurement for at least one of the serving cell or the candidate cell.

47. The device according to any one of claims 45 or 46, wherein To determine whether the relaxed measurement criteria for the poor candidate cell condition are satisfied, the at least one processor is configured to: It is determined that a difference between the cell metric of the serving cell and the cell metric of the serving cell is smaller than the threshold.

48. The apparatus according to any one of claims 45 or 46, wherein To determine whether the relaxed measurement criteria for the poor candidate cell condition are satisfied, the at least one processor is configured to: It is determined that the cell metric of the candidate cell is less than the threshold.

49. An apparatus according to any one of claims 45 to 48, wherein the cell metric of the candidate cell includes a current layer 1 (L1) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 1 RSRP measurement of the serving cell based on a second SSB.

50. An apparatus according to any one of claims 45 to 48, wherein the cell metric of the candidate cell includes a current layer 3 (L3) reference signal received power (RSRP) measurement of the candidate cell based on a first synchronization signal block (SSB), and wherein the cell metric of the serving cell includes a current layer 3 RSRP measurement of the serving cell based on a second SSB.

51. A non-transitory computer-readable medium having instructions stored thereon, which, when executed by one or more processors, cause the one or more processors to perform the operations of any one of claims 39 to 44.

52. An apparatus for wireless communication, the apparatus comprising one or more means for performing the operations of any one of claims 39 to 44.

53. A method of providing wireless communication performed by a user equipment (UE), the method comprising: determining one or more cells in a triggering evaluation; determining a cell metric type associated with the triggering evaluation; determining whether a trigger condition exists according to the cell metric type; as well as Selective layer 1 (L1) measurements are performed based on determining that the trigger condition exists.

54. The method of claim 53, wherein the selective L1 measurement comprises one of: suspending L1 measurement based on satisfying relaxed measurement criteria for low mobility, or reducing the frequency of L1 measurement based on satisfying the relaxed measurement criteria.

55. The method of claim 53, wherein determining one or more cells in the trigger evaluation further comprises determining a plurality of cells used in the trigger evaluation.

56. The method according to any one of claims 53 to 55, wherein determining the one or more cells in the trigger evaluation is based on fixed rules for serving cells or candidate cells.

57. The method of any one of claims 53 to 55, wherein determining the one or more cells in the trigger evaluation is based on a network entity configuring a serving cell or a candidate cell.

58. A method according to any one of claims 53 to 55, wherein determining the one or more cells in the trigger evaluation is based on any or all of the serving cells or candidate cells, including or excluding a primary serving cell (PCell).

59. A method according to any one of claims 53 to 58, wherein the cell metric type includes one or more of the following: (1) a metric related to the cell level; (2) layer 3 (L3) cell quality; (3) L3 SS-RSRP (synchronization signal-reference signal received power); (4) L3 SS-SINR (synchronization signal-signal interference and noise ratio); (5) L1 cell quality; (6) L1-SINR; (7) L1-RSRP; (8) cell average; (9) the first X beams / reference signals (RS) in the cell; (10) all or at least one RS; (11) beam failure detection RS in the cell; (12) multiple transmission / reception point (mTRP); (13) an mTRP in which two transmission configuration indicators (TCIs) are indicated, including a quasi-co-located (QLC) RS of the two TCIs or at least one indicated TCI.

60. The method according to any one of claims 53 to 59, wherein the triggering condition comprises one or more of the following: a low mobility condition, a serving cell too good condition, a serving cell too good plus a candidate cell too poor condition.

61. The method of claim 60, wherein the low mobility condition comprises a scenario in which one or more serving cells / candidate cells are in low mobility, and the serving cell-too-good condition comprises a scenario in which the serving cell is too good plus one or more serving cells / candidate cells are too good.

62. The method according to any one of claims 60 to 61, wherein the condition that the serving cell is too good plus the candidate cell is too poor comprises one of the following: a scenario in which the serving cell is too good plus all candidate cells are too poor, or a scenario in which the serving cell is too good plus a single cell is too poor.

63. The method according to any one of claims 53 to 62, wherein the selective L1 measurement comprises one or more of the following: (1) skipping L1 measurement; (2) reducing the L1 measurement frequency; (3) skipping the L1 measurement for a single cell that meets the trigger condition or reducing the L1 measurement frequency for it; (4) when a single cell meets the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for it; (5) when all cells meet the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for them.

64. An apparatus for performing wireless communications, the apparatus comprising: at least one memory; and at least one processor coupled to at least one memory and configured to: determining one or more cells in a triggering evaluation; determining a cell metric type associated with the triggering evaluation; determining whether a trigger condition exists according to the cell metric type; as well as Selective layer 1 (L1) measurements are performed based on determining that the trigger condition exists.

65. The apparatus of claim 64, wherein the selective L1 measurement comprises one of: suspending L1 measurement based on satisfying relaxed measurement criteria for low mobility, or reducing the frequency of L1 measurement based on satisfying the relaxed measurement criteria.

66. The apparatus of claim 64, wherein determining one or more cells in the trigger evaluation further comprises determining a plurality of cells used in the trigger evaluation.

67. The apparatus of any one of claims 64 to 66, wherein determining the one or more cells in the trigger evaluation is based on fixed rules for serving cells or candidate cells.

68. The apparatus of any one of claims 64 to 66, wherein determining the one or more cells in the trigger evaluation is based on a network entity configuring a serving cell or a candidate cell.

69. An apparatus according to any one of claims 64 to 66, wherein determining the one or more cells in the trigger evaluation is based on any or all of the serving cells or candidate cells, including or excluding a primary serving cell (PCell).

70. An apparatus according to any one of claims 64 to 69, wherein the cell metric type comprises one or more of the following: (1) a cell-level related metric; (2) layer 3 (L3) cell quality; (3) L3 SS-RSRP (synchronization signal-reference signal received power); (4) L3 SS-SINR (synchronization signal-signal to interference and noise ratio); (5) L1 cell quality; (6) L1-SINR; (7) L1-RSRP; (8) cell average; (9) the first X beams / reference signals (RS) in the cell; (10) all or at least one RS; (11) beam failure detection RS in the cell; (12) multiple transmission / reception point (mTRP); (13) an mTRP in which two transmission configuration indicators (TCIs) are indicated, including a quasi-co-located (QLC) RS of the two TCIs or at least one indicated TCI.

71. The apparatus according to any one of claims 64 to 70, wherein the triggering condition comprises one or more of the following: a low mobility condition, a serving cell too good condition, a serving cell too good plus a candidate cell too bad condition.

72. The apparatus of claim 71 , wherein the low mobility condition comprises a scenario in which one or more serving cells / candidate cells are in low mobility, and the serving cell-too-good condition comprises a scenario in which the serving cell is too good plus one or more serving cells / candidate cells are too good.

73. The apparatus according to any one of claims 71 to 72, wherein the condition that the serving cell is too good plus the candidate cell is too poor comprises one of the following: a scenario in which the serving cell is too good plus all candidate cells are too poor, or a scenario in which the serving cell is too good plus an individual cell is too poor.

74. An apparatus according to any one of claims 64 to 73, wherein the selective L1 measurement comprises one or more of the following: (1) skipping L1 measurement; (2) reducing the L1 measurement frequency; (3) skipping the L1 measurement for a single cell that meets the trigger condition or reducing the L1 measurement frequency for it; (4) when a single cell meets the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for it; (5) when all cells meet the trigger condition, skipping the L1 measurement for all cells or reducing the L1 measurement frequency for them.

75. A non-transitory computer-readable medium having instructions stored thereon that, when executed by one or more processors, cause the one or more processors to perform the operations of any one of claims 53 to 63.

76. An apparatus for wireless communications, the apparatus comprising one or more means for performing the operations of any of claims 53 to 63.

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